Changeable words: Difference between revisions
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m (→{{header|REXX}}: changed some whitespace and comments.) |
(→{{header|Phix}}: simplified) |
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=={{header|Phix}}== |
=={{header|Phix}}== |
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<lang Phix>function changeable(string a, b) |
<lang Phix>function changeable(string a, b) |
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return length(a)=length(b) and sum(sq_ne(a,b))=1 |
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bool diff = false |
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for i=1 to length(a) do |
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if a[i]!=b[i] then |
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if diff then return false end if |
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diff = true |
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end if |
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end for |
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if not diff then ?9/0 end if |
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return true |
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end function |
end function |
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