LeetCode 2116 - Check if a Parentheses String Can Be Valid

Parent index: LeetCode Problem Index Set 2 MOC

Problem Metadata

• LeetCode URL: https://leetcode.com/problems/check-if-a-parentheses-string-can-be-valid/
• Frontend ID: 2116
• Difficulty: Medium
• Primary category: Greedy
• Source lists: NeetCode Practice

Related Algorithms

• Greedy
• Greedy Algorithms — Proof Techniques

Research Status

• Problem statement and constraints verified against the LeetCode page.
• Core algorithm explained in paper-style prose.
• Worked examples, edge cases, complexity proof, and pitfalls added.
• Solution variants linked back to the relevant algorithm notes.

See Also

• LeetCode Problem Index Set 2 MOC
• LeetCode 500 Problem Index MOC
• SWE Interview Preparation MOC