NeetCode #449LC-1530MediumTrees
← Back to All Problems#449 · #1530 · Number of Good Leaf Nodes Pairs(好叶子节点对的数量)
📌 Problem Statement & Constraints
Given the root of a binary tree and an integer
distance, return the number of good leaf node pairs: two leaves whose shortest path length (number of edges) is at most distance. Constraints: 1 <= number of nodes <= 2^10, 1 <= distance <= 10.🔒
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