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Problem: Valid Parentheses

easy
15 min
Understand how to verify valid parenthesization in strings using stacks. This lesson helps you apply stacks to solve problems involving matching and ordering of parentheses efficiently.

Statement

Given a string that 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 closed in the correct order. Therefore, )( and ()(() are invalid.

Constraints:

  • 11 \leq s.length 103\leq 10^3
  • The string will only contain the following characters: (, ), [, ], { and }.
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Tap here to switch tabs
Problem
Submissions

Problem: Valid Parentheses

easy
15 min
Understand how to verify valid parenthesization in strings using stacks. This lesson helps you apply stacks to solve problems involving matching and ordering of parentheses efficiently.

Statement

Given a string that 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 closed in the correct order. Therefore, )( and ()(() are invalid.

Constraints:

  • 11 \leq s.length 103\leq 10^3
  • The string will only contain the following characters: (, ), [, ], { and }.
Unlock AI-Powered LearningUpgrade to smarter learning with instant explanations of Ask Agent, Personalized Interview Prep, Real-World Projects, 3 AI Mock Interviews per month, and Personalized Paths