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Challenge: Valid Parentheses

Explore how to verify the validity of a parentheses string by ensuring every opening bracket is properly closed in the correct order. This lesson guides you through implementing this check using stack data structures in C++, preparing you for common coding interview challenges.

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Statement

Given a string, exp, which may consist of opening and closing parentheses. Your task is to check whether or not the string contains valid parenthesization.

The conditions to validate are as follows:

  1. Every opening parenthesis should be closed by the same kind of parenthesis. Therefore, {) and [(]) strings are invalid.

  2. Every opening parenthesis must be ...