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| def solution(a) | |
| sum = 0 | |
| sum = a.inject(&:+) | |
| l = 0 | |
| r = 0 | |
| p = 0 | |
| ret = nil | |
| a[0..-2].each_with_index do |element| | |
| l += element | |
| r = sum - l | |
| p = (l - r).abs | |
| ret ||= p | |
| ret = p if p < ret | |
| end | |
| ret | |
| end |
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