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... LeetCode Medium Problems Competitive Programming Data Structures and Algorithms Python LeetCode Solution Java ...

Valid Parentheses Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

Watch Minh attempt AI-enabled coding rounds live! Timestamps: 00:00 Round #1 12:41 Round #2 18:56 Round #3 25:15 Round ...