Sudoku: Difference between revisions
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(→{{header|Tailspin}}: Type bounds + link to blog post) |
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=={{header|Tailspin}}== |
=={{header|Tailspin}}== |
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There is a blog post about how this code was developed: https://tobega.blogspot.com/2020/05/creating-algorithm.html |
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<syntaxhighlight lang="tailspin"> |
<syntaxhighlight lang="tailspin"> |
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templates deduceRemainingDigits |
templates deduceRemainingDigits |
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templates findOpenPosition |
templates findOpenPosition |
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@:{options: 10"1"}; |
@:{options: 10"1"}; |
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$ -> \[i;j](when <[](..~$@findOpenPosition.options::raw)> do @findOpenPosition: {row: $i, col: $j, options: ($::length)"1"}; \) -> !VOID |
$ -> \[i;j](when <[]?($::length <..~$@findOpenPosition.options::raw>)> do @findOpenPosition: {row: $i, col: $j, options: ($::length)"1"}; \) -> !VOID |
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$@ ! |
$@ ! |
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end findOpenPosition |
end findOpenPosition |
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@: $; |
@: $; |
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$ -> findOpenPosition -> # |
$ -> findOpenPosition -> # |
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when <{options: <=0"1">}> do [] ! |
when <{options: <=0"1">}> do row´1:[] ! |
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when <{options: <=10"1">}> do $@ ! |
when <{options: <=10"1">}> do $@ ! |
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when <> do def next: $; |
when <> do def next: $; |
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$@ -> selectFirst&{pos: $next} -> deduceRemainingDigits |
$@ -> selectFirst&{pos: $next} -> deduceRemainingDigits |
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-> \(when <~=[]> do @deduceRemainingDigits: $; {options: 10"1"} ! |
-> \(when <~=row´1:[]> do @deduceRemainingDigits: $; {options: 10"1"} ! |
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when <=[]> do ^@deduceRemainingDigits($next.row;$next.col;1) |
when <=row´1:[]> do ^@deduceRemainingDigits($next.row;$next.col;1) |
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-> { $next..., options: $next.options-1"1"} ! \) -> # |
-> { $next..., options: $next.options-1"1"} ! \) -> # |
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end deduceRemainingDigits |
end deduceRemainingDigits |
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assert row´1:[ |
assert row´1:[ |
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col´1:[[],3,4,6,7,8,9,1,2], |
col´1:[[],3,4,6,7,8,9,1,2], |
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$sample(row´2..last)...] -> deduceRemainingDigits <=[]> 'no remaining options returns empty' |
$sample(row´2..last)...] -> deduceRemainingDigits <=row´1:[]> 'no remaining options returns empty' |
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assert row´1:[ |
assert row´1:[ |
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templates solveSudoku |
templates solveSudoku |
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$ -> parseSudoku -> deduceRemainingDigits -> # |
$ -> parseSudoku -> deduceRemainingDigits -> # |
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when <=[]> do 'No result found' ! |
when <=row´1:[]> do 'No result found' ! |
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when <> do $ -> \[i]( |
when <> do $ -> \[i]( |
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'$(col´1..col´3)...;|$(col´4..col´6)...;|$(col´7..col´9)...;$#10;' ! |
'$(col´1..col´3)...;|$(col´4..col´6)...;|$(col´7..col´9)...;$#10;' ! |
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