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Largest Sum Contiguous Subarray
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| def max_subarray(a) | |
| max = - Float::INFINITY | |
| max_at = [] | |
| sum = 0 | |
| sum_at = [] | |
| a.each_with_index do |e, i| | |
| sum += e | |
| sum_at << e | |
| sum_at = [e] if sum < e | |
| sum = [sum, e].max | |
| if sum > max | |
| max = sum | |
| max_at = sum_at.clone | |
| end | |
| end | |
| return max, max_at | |
| end |
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