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Walls and Gates

medium Solve on LeetCode

Last edited: January 4, 2026

Problem
Examples
Example 1
Example 2
Solution
Understanding the Problem
Method 1 – DFS from Each Gate
Intuition
Approach
Code
Complexity
Method 2 - Multi-Source BFS from All Gates
Intuition
Approach
Code
Complexity

Related Tags

array backtracking breadth-first-search leetcode matrix path-finding

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