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A comment on Why 37signals Doesn't Hire Programmers Based on Brainteasers. Parent comment

Re:Why 37signals Doesn't Hire Programmers Based on Brainteasers by mbernstein on Friday January 06, 2012 @02:03AM (#3432358)
Recursion in this case - generally in ruby as well - is not a great idea. Also, you have quite high memory requirements: O(n^2)

O(n) is quite easy in this problem.

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