LeetCode Solution: 20. Valid Parentheses

📰 Dev.to · Vansh Aggarwal

Learn to solve the Valid Parentheses problem on LeetCode using stacks and improve your coding skills

intermediate Published 16 May 2026
Action Steps
  1. Read the problem statement on LeetCode 20 and understand the requirements
  2. Create a stack data structure to store the opening parentheses
  3. Push opening parentheses onto the stack and pop them off when a matching closing parenthesis is found
  4. Use a dictionary to map closing parentheses to their corresponding opening parentheses
  5. Test the solution with example inputs to ensure it works correctly
Who Needs to Know This

Software engineers and developers can benefit from this solution to improve their problem-solving skills and learn how to use stacks to solve complex problems

Key Insight

💡 Using a stack to keep track of opening parentheses allows for efficient matching with closing parentheses

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Solve LeetCode 20 with stacks! #leetcode #stacks #coding
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