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Leetcode - 100. Same Tree

The “Same Tree” problem is a classic interview question that tests your understanding of tree traversal. It asks: Given two binary trees, check if they are structurally identical and node values are equal. In this post, we'll walk through three elegant solutions: Recursive (DFS) Iterative with Queue (BFS) Iterative with Stack (DFS) By the end, you'll know when and why to choose each one.

Apr 19, 2025 - 20:03
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Leetcode - 100. Same Tree

The “Same Tree” problem is a classic interview question that tests your understanding of tree traversal. It asks:

Given two binary trees, check if they are structurally identical and node values are equal.

In this post, we'll walk through three elegant solutions:

  1. Recursive (DFS)
  2. Iterative with Queue (BFS)
  3. Iterative with Stack (DFS)

By the end, you'll know when and why to choose each one.

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