BINARY TREE PRUNING | LEETCODE # 814 | PYTHON POSTORDER DFS SOLUTION

In this video we are solving yet another tree question! This time it's a popular Apple interview question: Binary Tree Pruning (Leetcode # 814).
This question isn't all that hard conceptually as you can draw it out quite easily but there are quite a few edge cases that make it a little tricky. Don't worry we'll go over each one of them and walk you through this question with ease.

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