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easy Solve on LeetCode

Last edited: September 7, 2025

Problem
Examples
Example 1
Example 2
Example 3
Solution
Method 1 - Recursive
Algorithm
Video explanation
Complexity
Code
Details on Rust code
Method 2 - Iterative using Level Order Traversal
Intuition
Approach
Complexity
Code
Method 3 - Iterative using DFS
Intuition
Approach
Complexity
Code

video explanation

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