https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&feed=atom&action=history
Haskell Quiz/Yahtzee/Solution Burton - Revision history
2024-03-19T03:34:45Z
Revision history for this page on the wiki
MediaWiki 1.35.5
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=33804&oldid=prev
Newacct at 00:18, 22 February 2010
2010-02-22T00:18:42Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:18, 22 February 2010</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>delemIndices :: [Die] -> Cup -> [Int]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>delemIndices <del class="diffchange diffchange-inline">[]</del> c <del class="diffchange diffchange-inline">=</del> <del class="diffchange diffchange-inline">[]</del></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>delemIndices <ins class="diffchange diffchange-inline">l</ins> c <ins class="diffchange diffchange-inline">=</ins> <ins class="diffchange diffchange-inline">map</ins> <ins class="diffchange diffchange-inline">(fromJust</ins> <ins class="diffchange diffchange-inline">.</ins> <ins class="diffchange diffchange-inline">(`delemIndex` c))</ins> <ins class="diffchange diffchange-inline">l</ins></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>delemIndices (x:xs) c = fromJust (delemIndex x c) : delemIndices xs c</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--true if this round isn't taken in the scorecard</div></td>
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Newacct
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=33759&oldid=prev
Newacct at 11:39, 21 February 2010
2010-02-21T11:39:41Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:39, 21 February 2010</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Foreign</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Foreign</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Maybe</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Maybe</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>import Data.Ord</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import List</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import List</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Char</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>import Char</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>import Monad</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>data Round = Ones | Twos | Threes | Fours | Fives | Sixes | ThreeOfAKind </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>data Round = Ones | Twos | Threes | Fours | Fives | Sixes | ThreeOfAKind </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>dgroup :: Cup -> [[Die]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>dgroup :: Cup -> [[Die]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>dgroup = sortBy (<del class="diffchange diffchange-inline">\a b -> if</del> length<del class="diffchange diffchange-inline"> a > length b then LT else GT</del>) . group . sort . dlist</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>dgroup = sortBy (<ins class="diffchange diffchange-inline">comparing</ins> length) . group . sort . dlist</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>hasrun :: Int -> Cup -> Bool</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>hasrun :: Int -> Cup -> Bool</div></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>hasrun n c = <del class="diffchange diffchange-inline">if</del> null rs <del class="diffchange diffchange-inline">then False else</del> (maximum $ map length $ rs) >= 0</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>hasrun n c = <ins class="diffchange diffchange-inline">not</ins> <ins class="diffchange diffchange-inline">(</ins>null rs<ins class="diffchange diffchange-inline">)</ins> <ins class="diffchange diffchange-inline">&&</ins> (maximum $ map length $ rs) >= 0</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where rs = runs c</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where rs = runs c</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td colspan="2" class="diff-lineno">Line 190:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>readints :: String -> [Int]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>readints :: String -> [Int]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>readints = map <del class="diffchange diffchange-inline">(read . (:[]))</del> . filter isDigit </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>readints = map <ins class="diffchange diffchange-inline">digitToInt</ins> . filter isDigit </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>showcard :: ScoreCard -> String</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>showcard :: ScoreCard -> String</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>showcard = <del class="diffchange diffchange-inline">concat . intersperse " "</del> . map </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>showcard = <ins class="diffchange diffchange-inline">unwords</ins> . map </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> (\(r, c) -> <del class="diffchange diffchange-inline">if isNothing</del> c </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> (\(r, c) -> <ins class="diffchange diffchange-inline">case</ins> c <ins class="diffchange diffchange-inline">of</ins></div></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline">then</del> <del class="diffchange diffchange-inline">(</del>show r ++ " [-]"<del class="diffchange diffchange-inline">) </del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline">Nothing -></ins> show r ++ " [-]"</div></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline">else</del> <del class="diffchange diffchange-inline">(</del>show r ++ " ["++show (score r <del class="diffchange diffchange-inline">(fromJust c)</del>) ++ "]"<del class="diffchange diffchange-inline">)</del>)</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline">Just x -></ins> show r ++ " ["++show (score r <ins class="diffchange diffchange-inline">x</ins>) ++ "]")</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>updatesc :: ScoreCard -> Cup -> Round -> ScoreCard</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>updatesc :: ScoreCard -> Cup -> Round -> ScoreCard</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 230:</td>
<td colspan="2" class="diff-lineno">Line 232:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--shake a cup, only the locations in the list (x:xs)</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--shake a cup, only the locations in the list (x:xs)</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>shakecup :: Cup -> [Int] -> IO Cup</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>shakecup :: Cup -> [Int] -> IO Cup</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>shakecup<del class="diffchange diffchange-inline"> c [] </del> = <del class="diffchange diffchange-inline">return</del> <del class="diffchange diffchange-inline">c</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>shakecup = <ins class="diffchange diffchange-inline">foldM</ins> <ins class="diffchange diffchange-inline">shakecup'</ins></div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>shakecup c <del class="diffchange diffchange-inline">(</del>x<del class="diffchange diffchange-inline">:xs)</del> = do y <- rolldie</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline"> where </ins>shakecup<ins class="diffchange diffchange-inline">'</ins> c x = do y <- rolldie</div></td>
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<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline">c'</del> <del class="diffchange diffchange-inline"><-</del> return (dset c x y)</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline"> </ins> return (dset c x y)</div></td>
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<td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_28_0_rhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_14_0_lhs"></a> <del class="diffchange diffchange-inline">shakecup</del> <del class="diffchange diffchange-inline">c' xs</del></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> </div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>rolldie :: IO Die</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>rolldie :: IO Die</div></td>
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<tr>
<td colspan="2" class="diff-lineno">Line 316:</td>
<td colspan="2" class="diff-lineno">Line 317:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> else lowest</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> else lowest</div></td>
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<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> lowest = head $ dropWhile (not . <del class="diffchange diffchange-inline">(</del>flip isFree<del class="diffchange diffchange-inline">)</del> sc) [Ones .. Yahtzee]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> lowest = head $ dropWhile (not . flip isFree sc) [Ones .. Yahtzee]</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> scratch = if isFree Yahtzee sc && length (filter (isNothing . snd) sc) > 10</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> scratch = if isFree Yahtzee sc && length (filter (isNothing . snd) sc) > 10</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 345:</td>
<td colspan="2" class="diff-lineno">Line 346:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> putStr (n++"> ")</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> putStr (n++"> ")</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> x <- getLine</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> x <- getLine</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> x' <del class="diffchange diffchange-inline"><- return</del> <del class="diffchange diffchange-inline">(</del>clean x<del class="diffchange diffchange-inline">)</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline"> let</ins> x' <ins class="diffchange diffchange-inline">=</ins> clean x</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> if elem x' ss then return x' else getInp s n ss</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> if elem x' ss then return x' else getInp s n ss</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>getInp2 s n ss = do putStrLn s</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>getInp2 s n ss = do putStrLn s</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> putStr (n++"> ")</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> putStr (n++"> ")</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> x <- getLine</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> x <- getLine</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> x' <del class="diffchange diffchange-inline"><- return</del> <del class="diffchange diffchange-inline">(</del>clean x<del class="diffchange diffchange-inline">)</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline"> let</ins> x' <ins class="diffchange diffchange-inline">=</ins> clean x</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> if reroll x' || elem x' ss </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> if reroll x' || elem x' ss </div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then return x' </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then return x' </div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 371:</td>
<td colspan="2" class="diff-lineno">Line 372:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--take a string into a round to score against</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--take a string into a round to score against</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>parseR :: String -> IO Round</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>parseR :: String -> IO Round</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>parseR = return . fromJust . <del class="diffchange diffchange-inline">((</del>flip lookup<del class="diffchange diffchange-inline">)</del> uiflags<del class="diffchange diffchange-inline">)</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>parseR = return . fromJust . flip lookup uiflags</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--let each player take 13 moves</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--let each player take 13 moves</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>playgame :: Player -> Player -> IO ()</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>playgame :: Player -> Player -> IO ()</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>playgame = takemoves 0</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>playgame = takemoves 0</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> where takemoves n p1 p2 <del class="diffchange diffchange-inline">= if</del> n < 13</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> where takemoves n p1 p2 <ins class="diffchange diffchange-inline">|</ins> n < 13<ins class="diffchange diffchange-inline"> = do p1' <- move p1</ins></div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline">then</del> <del class="diffchange diffchange-inline">do</del> <del class="diffchange diffchange-inline">p1</del>' <- move <del class="diffchange diffchange-inline">p1</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline"> p2</ins>' <- move <ins class="diffchange diffchange-inline">p2</ins></div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline">p2'</del> <del class="diffchange diffchange-inline"><-</del> <del class="diffchange diffchange-inline">move</del> p2</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline"> takemoves (n+1) p1'</ins> p2<ins class="diffchange diffchange-inline">'</ins></div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> <del class="diffchange diffchange-inline"> takemoves (n+1)</del> p1<del class="diffchange diffchange-inline">'</del> p2<del class="diffchange diffchange-inline">'</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> <ins class="diffchange diffchange-inline">|</ins> <ins class="diffchange diffchange-inline">otherwise</ins> <ins class="diffchange diffchange-inline">=</ins> <ins class="diffchange diffchange-inline">end</ins> p1 p2</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> else end p1 p2</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>main = do putStrLn "Yahtzee!"</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>main = do putStrLn "Yahtzee!"</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 387:</td>
<td colspan="2" class="diff-lineno">Line 387:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> playgame (getplayer x1 "Player 1") (getplayer x2 "Player 2")</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> playgame (getplayer x1 "Player 1") (getplayer x2 "Player 2")</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where hc = ["H", "C"]</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where hc = ["H", "C"]</div></td>
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<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> getplayer<del class="diffchange diffchange-inline"> t n = if t ==</del> "H"<del class="diffchange diffchange-inline"> then (Human emptysc</del> n<del class="diffchange diffchange-inline">)</del> <del class="diffchange diffchange-inline">else</del> <del class="diffchange diffchange-inline">(Computer</del> emptysc n<del class="diffchange diffchange-inline">)</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> getplayer "H" n <ins class="diffchange diffchange-inline">=</ins> <ins class="diffchange diffchange-inline">Human</ins> emptysc n</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_14_0_lhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_28_0_rhs"></a> <ins class="diffchange diffchange-inline">getplayer</ins> <ins class="diffchange diffchange-inline">_</ins> <ins class="diffchange diffchange-inline">n</ins> <ins class="diffchange diffchange-inline">=</ins> <ins class="diffchange diffchange-inline">Computer</ins> <ins class="diffchange diffchange-inline">emptysc</ins> <ins class="diffchange diffchange-inline">n</ins></div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
</table>
Newacct
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=10243&oldid=prev
Quale: sharpen cat
2007-01-13T11:05:20Z
<p>sharpen cat</p>
<table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:05, 13 January 2007</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Accepts 2 players only. Computer player heuristic described in the comment by the function `shakeai'. In 20 computer vs. computer games the average score was 185.</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Accepts 2 players only. Computer player heuristic described in the comment by the function `shakeai'. In 20 computer vs. computer games the average score was 185.</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del class="diffchange diffchange-inline">Code</del>]]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins class="diffchange diffchange-inline">Haskell Quiz solutions|Yahtzee</ins>]]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><haskell></div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><haskell></div></td>
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</table>
Quale
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=7621&oldid=prev
Jim Burton at 15:20, 30 October 2006
2006-10-30T15:20:23Z
<p></p>
<table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:20, 30 October 2006</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td>
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<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Accepts 2 players only. Computer player<del class="diffchange diffchange-inline"> uses a</del> heuristic described in the comment by the function `shakeai'. In 20 computer vs. computer games the average score was 185.</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Accepts 2 players only. Computer player heuristic described in the comment by the function `shakeai'. In 20 computer vs. computer games the average score was 185.</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Code]]</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Code]]</div></td>
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</table>
Jim Burton
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=7620&oldid=prev
Jim Burton at 15:19, 30 October 2006
2006-10-30T15:19:24Z
<p></p>
<table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:19, 30 October 2006</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 240:</td>
<td colspan="2" class="diff-lineno">Line 240:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{--</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{--</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Heuristics for computer turns<del class="diffchange diffchange-inline">:</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Heuristics for computer turns<ins class="diffchange diffchange-inline">. Words in *Asterisks* are rounds to score these dice against,</ins></div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>except *Lowest* and *BestThrees* which are subroutines described below</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Roll Dice</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Roll Dice</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>IF dice match *Yahtzee* THEN <del class="diffchange diffchange-inline">*Yahtzee*</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>IF dice match *Yahtzee* THEN </div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> IF *Yahtzee* is free THEN *Yahtzee*</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> ELSE *Lowest*</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF dice match *FourOfAKind*</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF dice match *FourOfAKind*</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> IF Can Throw Again THEN throw the die which isn't in the matching set again</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> IF Can Throw Again THEN throw the die which isn't in the matching set again</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 266:</td>
<td colspan="2" class="diff-lineno">Line 270:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *Chance* is free THEN *Chance*</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *Chance* is free THEN *Chance*</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *FourOfAKind* is free THEN *FourOfAKind*</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *FourOfAKind* is free THEN *FourOfAKind*</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>ELSE<del class="diffchange diffchange-inline"> IF</del> *<del class="diffchange diffchange-inline">Ones* is free THEN *Ones</del>*</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>ELSE *<ins class="diffchange diffchange-inline">Lowest</ins>*</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Lowest : Pick the lowest value evailable slot</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>IF *Ones* is free THEN *Ones*</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>...</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>...</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *Yahtzee* is free then *Yahtzee*</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>ELSE IF *Yahtzee* is free then *Yahtzee*</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--}</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>--}</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 309:</td>
<td colspan="2" class="diff-lineno">Line 315:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> yorlowest = if isFree Yahtzee sc</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> yorlowest = if isFree Yahtzee sc</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> else <del class="diffchange diffchange-inline">scratch</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> else <ins class="diffchange diffchange-inline">lowest</ins></div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> lowest = head $ dropWhile (not . (flip isFree) sc) [Ones .. Yahtzee]</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> scratch = if isFree Yahtzee sc && length (filter (isNothing . snd) sc) > 10</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> scratch = if isFree Yahtzee sc && length (filter (isNothing . snd) sc) > 10</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then Yahtzee</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 316:</td>
<td colspan="2" class="diff-lineno">Line 323:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> else if isFree FourOfAKind sc</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> else if isFree FourOfAKind sc</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then FourOfAKind</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> then FourOfAKind</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> else <del class="diffchange diffchange-inline">head $ dropWhile (not . (flip isFree) sc) [Ones .. Yahtzee]</del></div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> else <ins class="diffchange diffchange-inline">lowest</ins></div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>shake :: ScoreCard -> Int -> Cup -> String -> [Int] -> IO ScoreCard</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>shake :: ScoreCard -> Int -> Cup -> String -> [Int] -> IO ScoreCard</div></td>
</tr>
<tr>
<td colspan="2" class="diff-lineno">Line 381:</td>
<td colspan="2" class="diff-lineno">Line 388:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where hc = ["H", "C"]</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> where hc = ["H", "C"]</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> getplayer t n = if t == "H" then (Human emptysc n) else (Computer emptysc n)</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> getplayer t n = if t == "H" then (Human emptysc n) else (Computer emptysc n)</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></haskell></div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></haskell></div></td>
</tr>
</table>
Jim Burton
https://wiki.haskell.org/index.php?title=Haskell_Quiz/Yahtzee/Solution_Burton&diff=7619&oldid=prev
Jim Burton: added my solution
2006-10-30T15:13:15Z
<p>added my solution</p>
<p><b>New page</b></p><div>Accepts 2 players only. Computer player uses a heuristic described in the comment by the function `shakeai'. In 20 computer vs. computer games the average score was 185.<br />
<br />
[[Category:Code]]<br />
<br />
<haskell><br />
module Main<br />
where<br />
import Random<br />
import IO<br />
import Foreign<br />
import Maybe<br />
import List<br />
import Char<br />
<br />
data Round = Ones | Twos | Threes | Fours | Fives | Sixes | ThreeOfAKind <br />
| FourOfAKind | FullHouse | LowStraight | HighStraight | Chance | Yahtzee <br />
deriving (Show, Eq, Enum)<br />
type Turn = Either Round [Int] --either the round to score these dice against or a list of die locations to roll again<br />
data Die = N | D1 | D2 | D3 | D4 | D5 | D6 deriving Eq<br />
instance Ord Die where<br />
d <= d' = fromEnum d <= fromEnum d'<br />
instance Show Die where show = show . fromEnum<br />
instance Enum Die where<br />
toEnum n = case n of<br />
1 -> D1<br />
2 -> D2<br />
3 -> D3<br />
4 -> D4<br />
5 -> D5<br />
6 -> D6<br />
_ -> N<br />
fromEnum d = case d of<br />
D1 -> 1<br />
D2 -> 2<br />
D3 -> 3<br />
D4 -> 4<br />
D5 -> 5<br />
D6 -> 6<br />
_ -> 0<br />
<br />
type Cup = (Die, Die, Die, Die, Die) --black, plastic, with imitation stitches round the top<br />
type ScoreCard = [(Round, Maybe Cup)]<br />
type Name = String<br />
data Player = Human ScoreCard Name | Computer ScoreCard Name<br />
<br />
scorecard :: Player -> ScoreCard<br />
scorecard (Human sc n) = sc<br />
scorecard (Computer sc n) = sc<br />
<br />
name :: Player -> Name<br />
name (Human sc n) = n<br />
name (Computer sc n) = n<br />
<br />
done, dtwo, dthree, dfour, dfive :: Cup -> Die<br />
done (a, b, c, d, e) = a<br />
dtwo (a, b, c, d, e) = b<br />
dthree (a, b, c, d, e) = c<br />
dfour (a, b, c, d, e) = d<br />
dfive (a, b, c, d, e) = e<br />
<br />
dmap :: (Die -> a) -> Cup -> [a]<br />
dmap f = map f . dlist<br />
dfilter :: (Die -> Bool) -> Cup -> [Die]<br />
dfilter f = filter f . dlist <br />
dlist :: Cup -> [Die]<br />
dlist (a, b, c, d, e) = a:b:c:d:e:[]<br />
dsum :: Cup -> Int<br />
dsum = sum . dmap fromEnum<br />
--position of first occurence of x<br />
delemIndex :: Die -> Cup -> Maybe Int<br />
delemIndex x (a, b, c, d, e) | x == a = Just 1 <br />
| x == b = Just 2<br />
| x == c = Just 3<br />
| x == d = Just 4<br />
| x == e = Just 5<br />
| otherwise = Nothing<br />
--positions of first occurences of (x:xs) in cup<br />
delemIndices :: [Die] -> Cup -> [Int]<br />
delemIndices [] c = []<br />
delemIndices (x:xs) c = fromJust (delemIndex x c) : delemIndices xs c<br />
--true if this round isn't taken in the scorecard<br />
isFree :: Round -> ScoreCard -> Bool<br />
isFree = curry (isNothing . fromJust . uncurry lookup)<br />
<br />
score :: Round -> Cup -> Int<br />
score Ones c = sum $ map fromEnum $ dfilter (==D1) c<br />
score Twos c = sum $ map fromEnum $ dfilter (==D2) c<br />
score Threes c = sum $ map fromEnum $ dfilter (==D3) c<br />
score Fours c = sum $ map fromEnum $ dfilter (==D4) c<br />
score Fives c = sum $ map fromEnum $ dfilter (==D5) c<br />
score Sixes c = sum $ map fromEnum $ dfilter (==D6) c<br />
score Chance c = dsum c<br />
score ThreeOfAKind c = if haseq 3 c then dsum c else 0 <br />
score FourOfAKind c = if haseq 4 c then dsum c else 0 <br />
score FullHouse c = if elem 2 gs && elem 3 gs then 25 else 0<br />
where gs = groups c<br />
score LowStraight c = if hasrun 3 c then 30 else 0<br />
score HighStraight c = if hasrun 4 c then 40 else 0<br />
score Yahtzee c = if haseq 5 c then 50 else 0 <br />
<br />
--true if this cup contain a score for this round<br />
fits :: Round -> Cup -> Bool<br />
fits = curry ((/=0) . uncurry score)<br />
<br />
uiflags :: [(String, Round)]<br />
uiflags = [("3K", ThreeOfAKind),<br />
("4K", FourOfAKind),<br />
("1", Ones),<br />
("2", Twos),<br />
("3", Threes),<br />
("4", Fours),<br />
("5", Fives),<br />
("6", Sixes),<br />
("C", Chance),<br />
("F", FullHouse), <br />
("L", LowStraight), <br />
("H", HighStraight), <br />
("Y", Yahtzee)]<br />
<br />
haseq :: Int -> Cup -> Bool<br />
haseq n = (>=n) . maximum . groups<br />
<br />
groups :: Cup -> [Int]<br />
groups = map length . dgroup<br />
<br />
dgroup :: Cup -> [[Die]]<br />
dgroup = sortBy (\a b -> if length a > length b then LT else GT) . group . sort . dlist<br />
<br />
hasrun :: Int -> Cup -> Bool<br />
hasrun n c = if null rs then False else (maximum $ map length $ rs) >= 0<br />
where rs = runs c<br />
<br />
runs :: Cup -> [[Die]]<br />
runs = filter ((>1) . length) . map takeInSeq . tails . sort . dlist<br />
<br />
--return the list of locations of dice in a cup which are not in the longest sequence<br />
notinlongestrun :: Cup -> [Int]<br />
notinlongestrun c = delemIndices (del1 lrun $ dlist c) c<br />
where lrun = head $ runs c<br />
--delete one occurence of each of xs from ys<br />
del1 [] ys = ys<br />
del1 xs [] = []<br />
del1 (x:xs) ys = del1 xs (delete x ys)<br />
--return the list of locations of dice in a cup which are not in any sequence<br />
notinrun :: Cup -> [Int]<br />
notinrun c = delemIndices (del1 rs $ dlist c) c<br />
where rs = concat $ filter ((>1) . (length)) $ runs c<br />
<br />
takeInSeq :: Enum a => [a] -> [a]<br />
takeInSeq [] = []<br />
takeInSeq [x] = [x]<br />
takeInSeq (x:y:xs) | fromEnum (succ x) == fromEnum y = x : takeInSeq (y:xs)<br />
| otherwise = takeInSeq (x:xs) <br />
<br />
dset :: Cup -> Int -> Die -> Cup<br />
dset c 1 d = (d, dtwo c, dthree c, dfour c, dfive c)<br />
dset c 2 d = (done c, d, dthree c, dfour c, dfive c)<br />
dset c 3 d = (done c, dtwo c, d, dfour c, dfive c)<br />
dset c 4 d = (done c, dtwo c, dthree c, d, dfive c)<br />
dset c 5 d = (done c, dtwo c, dthree c, dfour c, d)<br />
dset _ _ _ = error "dset - Illegal dice arg"<br />
<br />
scround :: Round -> ScoreCard -> (Round, Maybe Cup)<br />
scround r sc = (r, fromJust $ lookup r sc)<br />
<br />
emptysc :: ScoreCard<br />
emptysc = [(r, Nothing) | r <- [Ones .. Yahtzee]]<br />
<br />
emptycup :: Cup<br />
emptycup = (N, N, N, N, N)<br />
<br />
--get total value of a scorecard, including 35 point bonus if top half of <br />
--scorecard scores more than 62, and scoring extra yahtzees as 100<br />
total :: ScoreCard -> Int<br />
total sc = ybonus + bonus + (sum $ map snd scores) <br />
where scores = [(r, score r (fromJust d)) | (r, d) <- sc]<br />
bonus = if (sum $ map (snd) $ take 6 scores) > 62 then 35 else 0<br />
ybonus = if (fromJust $ lookup Yahtzee scores) == 50 <br />
then sum $ map yscore $ init sc<br />
else 0<br />
yscore (r, d) = if score Yahtzee (fromJust d) == 50 <br />
then 100-(score r (fromJust d)) <br />
else 0<br />
<br />
showcup :: Cup -> String<br />
showcup c = (show $ done c)++" "++(show $ dtwo c)++" "++(show $ dthree c) ++ " "++(show $ dfour c)<br />
++" "++(show $ dfive c)<br />
<br />
readints :: String -> [Int]<br />
readints = map (read . (:[])) . filter isDigit <br />
<br />
showcard :: ScoreCard -> String<br />
showcard = concat . intersperse " " . map <br />
(\(r, c) -> if isNothing c <br />
then (show r ++ " [-]") <br />
else (show r ++ " ["++show (score r (fromJust c)) ++ "]"))<br />
<br />
updatesc :: ScoreCard -> Cup -> Round -> ScoreCard<br />
updatesc sc c r = top ++ [(r, Just c)] ++ (tail rest)<br />
where (top, rest) = break ((==r) . (fst)) sc<br />
<br />
--trim and capitalise<br />
clean :: String -> String<br />
clean = map toUpper . reverse . dropWhile isSpace . reverse . dropWhile isSpace<br />
<br />
{-- IO --}<br />
<br />
--finish the game<br />
end :: Player -> Player -> IO ()<br />
end p1 p2 = do putStrLn ("Player 1> "++showcard (scorecard p1))<br />
putStrLn ("Player 1 scored "++(show t1))<br />
putStrLn ("Player 2> "++showcard (scorecard p2))<br />
putStrLn ("Player 2 scored "++(show t2))<br />
if t1 < t2 <br />
then putStrLn "Player 2 wins" <br />
else if t1 > t2 then putStrLn "Player 1 wins" else putStrLn "Draw" <br />
where t1 = total $ scorecard p1<br />
t2 = total $ scorecard p2<br />
<br />
--take a move, made up of 1-3 shakes<br />
move :: Player -> IO Player<br />
move p = do putStrLn $ name p<br />
putStrLn $ showcard $ scorecard p<br />
case p of<br />
(Human sc n) -> do sc' <- shake sc 0 emptycup n [1 .. 5]<br />
return (Human sc' n)<br />
(Computer sc n) -> do sc' <- shakeai sc 0 emptycup [1 .. 5]<br />
return (Computer sc' n)<br />
<br />
--shake a cup, only the locations in the list (x:xs)<br />
shakecup :: Cup -> [Int] -> IO Cup<br />
shakecup c [] = return c<br />
shakecup c (x:xs) = do y <- rolldie<br />
c' <- return (dset c x y)<br />
shakecup c' xs<br />
<br />
rolldie :: IO Die<br />
rolldie = do x <- getStdRandom (randomR (1,6))<br />
return $ [N .. D6]!!x<br />
<br />
{--<br />
Heuristics for computer turns:<br />
Roll Dice<br />
IF dice match *Yahtzee* THEN *Yahtzee*<br />
ELSE IF dice match *FourOfAKind*<br />
IF Can Throw Again THEN throw the die which isn't in the matching set again<br />
ELSE IF *Chance* > 20 THEN *Chance*<br />
ELSE *BestThrees*<br />
ELSE IF dice match *ThreeOfAKind*<br />
IF dice match *FullHouse* THEN *FullHouse*<br />
ELSE IF can throw again THEN throw the dice which aren't in the matching set again<br />
ELSE *BestThrees*<br />
ELSE IF dice match *HighStraight* THEN *HighStraight*<br />
ELSE IF dice match *LowStraight*<br />
IF *HighStraight* is free and can Throw Again THEN throw the dice which aren't in the run again<br />
ELSE *LowStraight*<br />
ELSE IF Can Throw Again THEN throw the die which aren't in the longest sequence again<br />
ELSE *BestThrees*<br />
<br />
BestThrees: Pick the best available 'Threes' (ie *Ones* to *Sixes* + *ThreeOfAKind*)<br />
IF longest matching set has a 6 and *Sixes* is free THEN *Sixes*<br />
...<br />
ELSE IF longest matching set has a 1 and *Ones* is free THEN *Ones*<br />
ELSE IF *ThreeOfAKind* is free THEN *ThreeOfAKind*<br />
ELSE IF *Yahtzee* is free and there are less than 3 moves left THEN *Yahtzee*<br />
ELSE IF *Chance* is free THEN *Chance*<br />
ELSE IF *FourOfAKind* is free THEN *FourOfAKind*<br />
ELSE IF *Ones* is free THEN *Ones*<br />
...<br />
ELSE IF *Yahtzee* is free then *Yahtzee*<br />
<br />
<br />
--}<br />
shakeai :: ScoreCard -> Int -> Cup -> [Int] -> IO ScoreCard<br />
shakeai sc i c xs = do c' <- shakecup c xs<br />
putStrLn ("Computer rolled " ++ (showcup c'))<br />
gs <- return (dgroup c')<br />
case length $ head gs of<br />
5 -> return $ updatesc sc c' yorlowest<br />
4 -> if i < 2 <br />
then shakeai sc (i+1) c' $ delemIndices (concat $ tail gs) c'<br />
else if isFree FourOfAKind sc<br />
then return $ updatesc sc c' FourOfAKind<br />
else if isFree Chance sc && score Chance c' > 20<br />
then return $ updatesc sc c' Chance<br />
else return $ updatesc sc c' (highest3s (head gs))<br />
3 -> if isFree FullHouse sc && (length $ head $ tail gs) == 2<br />
then return $ updatesc sc c' FullHouse<br />
else if i < 2<br />
then shakeai sc (i+1) c' (notinrun c')<br />
else return $ updatesc sc c' (highest3s (head gs))<br />
_ -> if isFree HighStraight sc && fits HighStraight c'<br />
then return $ updatesc sc c' HighStraight<br />
else if isFree LowStraight sc && fits LowStraight c'<br />
then if isFree HighStraight sc && i < 2<br />
then shakeai sc (i+1) c' (notinlongestrun c') --roll dice not in sequence again<br />
else return $ updatesc sc c' LowStraight<br />
else if i < 2<br />
then shakeai sc (i+1) c' $ delemIndices (concat $ tail gs) c'<br />
else return $ updatesc sc c' (highest3s (head gs))<br />
where highest3s xs | elem D6 xs && isFree Sixes sc = Sixes <br />
| elem D5 xs && isFree Fives sc = Fives <br />
| elem D4 xs && isFree Fours sc = Fours<br />
| elem D3 xs && isFree Threes sc = Threes<br />
| elem D2 xs && isFree Twos sc = Twos<br />
| elem D1 xs && isFree Ones sc = Ones<br />
| isFree ThreeOfAKind sc = ThreeOfAKind<br />
| otherwise = scratch <br />
yorlowest = if isFree Yahtzee sc<br />
then Yahtzee<br />
else scratch<br />
scratch = if isFree Yahtzee sc && length (filter (isNothing . snd) sc) > 10<br />
then Yahtzee<br />
else if isFree Chance sc<br />
then Chance<br />
else if isFree FourOfAKind sc<br />
then FourOfAKind<br />
else head $ dropWhile (not . (flip isFree) sc) [Ones .. Yahtzee]<br />
<br />
shake :: ScoreCard -> Int -> Cup -> String -> [Int] -> IO ScoreCard<br />
shake sc i c n xs = do c' <- shakecup c xs<br />
putStrLn $ showcup c'<br />
if i == 2<br />
then do x <- confirm1 n<br />
r <- parseR x<br />
newround c' r<br />
else do x <- confirm2 n<br />
t <- parse x<br />
either (shake sc (i+1) c' n) (newround c') t<br />
where newround e r = if isNothing (snd $ scround r sc)<br />
then return $ updatesc sc e r<br />
else do putStrLn ((show r)++" is taken.")<br />
shake sc i e n []<br />
<br />
--get some input matching an element from a list of legal values<br />
getInp, getInp2 :: String -> String -> [String] -> IO String<br />
getInp s n ss = do putStrLn s<br />
putStr (n++"> ")<br />
x <- getLine<br />
x' <- return (clean x)<br />
if elem x' ss then return x' else getInp s n ss<br />
getInp2 s n ss = do putStrLn s<br />
putStr (n++"> ")<br />
x <- getLine<br />
x' <- return (clean x)<br />
if reroll x' || elem x' ss <br />
then return x' <br />
else getInp s n ss<br />
where reroll ('R':' ':xs) = True<br />
reroll _ = False<br />
<br />
confirm1, confirm2 :: String -> IO String<br />
confirm1 n = getInp "Enter round to use these dice for" n moveinp<br />
confirm2 n = getInp2 "Enter round to use these dice for or R [nums] to roll dice again" n moveinp<br />
<br />
moveinp :: [String]<br />
moveinp = map fst uiflags <br />
<br />
--take a string into a list of die locations to roll again or a round to score against<br />
parse :: String -> IO (Either [Int] Round)<br />
parse ('R':' ':xs) = return (Left $ readints xs)<br />
parse str = do r <- parseR str<br />
return (Right r)<br />
--take a string into a round to score against<br />
parseR :: String -> IO Round<br />
parseR = return . fromJust . ((flip lookup) uiflags)<br />
<br />
--let each player take 13 moves<br />
playgame :: Player -> Player -> IO ()<br />
playgame = takemoves 0<br />
where takemoves n p1 p2 = if n < 13<br />
then do p1' <- move p1<br />
p2' <- move p2<br />
takemoves (n+1) p1' p2'<br />
else end p1 p2<br />
<br />
main = do putStrLn "Yahtzee!"<br />
x1 <- getInp "Enter type for Player 1 [h - human, c - computer]" "" hc<br />
x2 <- getInp "Enter type for Player 2 [h - human, c - computer]" "" hc<br />
playgame (getplayer x1 "Player 1") (getplayer x2 "Player 2")<br />
where hc = ["H", "C"]<br />
getplayer t n = if t == "H" then (Human emptysc n) else (Computer emptysc n)<br />
</haskell></div>
Jim Burton