LeetCode 834 | Sum of Distances in Tree | Tree DP Explained with Postorder + Preorder (Java)
24:46
YouTubecodingX krishna
LeetCode 834 | Sum of Distances in Tree | Tree DP Explained with Postorder + Preorder (Java)
In this video, I explain LeetCode 834 – Sum of Distances in Tree using a Tree DP approach. This problem looks hard at first, but once you understand the idea of postorder and preorder DFS, it becomes very logical. 🔑 Key Concepts Covered Why brute force fails for this problem How Tree DP helps reduce time complexity to O(n) Meaning of count ...
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