Maximum triangle path sum: Difference between revisions
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m (→{{header|Sidef}}: modified code to work with the latest version of Sidef) |
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=={{header|Sidef}}== |
=={{header|Sidef}}== |
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{{trans|Perl}} |
{{trans|Perl}} |
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Iterative solution: |
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<lang ruby>var sum = [0]; |
<lang ruby>var sum = [0]; |
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sum = [ |
sum = [ |
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x.first + sum.first, |
x.first + sum.first, |
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1 .. x.len-2 -> map{|i| x[i] + sum[i-1, i].max}..., |
1 ... x.len-2 -> map{|i| x[i] + [sum[i-1, i]].max}..., |
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x.last + sum.last, |
x.last + sum.last, |
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]; |
]; |
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say sum.max;</lang> |
say sum.max;</lang> |
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Recursive solution: |
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<lang ruby>var triangle = ARGF.slurp.lines.map{.words.map{.to_i}}; |
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func max_value(i=0, j=0) is cached { |
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i == triangle.len && return 0; |
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triangle[i][j] + [max_value(i+1, j), max_value(i+1, j+1)].max; |
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} |
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say max_value();</lang> |
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{{out}} |
{{out}} |
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<pre>% sidef maxpath.sf triangle.txt |
<pre>% sidef maxpath.sf triangle.txt |
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