[LeetCode] Longest Univalue Path 最長相同值路徑

阿新 • • 發佈：2017-10-08

present tput leetcode number value nbsp out longest rep

Given a binary tree, find the length of the longest path where each node in the path has the same value. This path may or may not pass through the root.

Note: The length of path between two nodes is represented by the number of edges between them.

Example 1:

Input:

              5
             /             4   5
           / \             1   1   5

Output:

Example 2:

Input:

              1
             /             4   5
           / \             4   4   5

Output:

Note: The given binary tree has not more than 10000 nodes. The height of the tree is not more than 1000.

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