Solution: Valid Parentheses
Explore how to verify if a string with parentheses is valid by using a stack data structure in C++. Learn the step-by-step process to push opening parentheses, match them with closing ones, and ensure the string is balanced by the end. Understand the time and space complexity of this approach for coding interviews.
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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:
Every opening parenthesis should be closed by the same kind of parenthesis. Therefore,
{)and[(])strings are invalid.Every opening parenthesis must be closed in the correct order. Therefore,
)(and()(()are invalid.
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