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Solution Review: Find Duplicate Parenthesis

Solution Review: Find Duplicate Parenthesis

This review provides a detailed analysis of finding duplicate parentheses.

Solution

The algorithm works by adding all the elements except ) to the stack. When we get a ) at that point, we find its corresponding pair and count all the elements between this pair. If the number of elements is 0 or 1, then we have a redundant parenthesis.

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