LeetCode题解之Diameter of Binary Tree 1、题目描述 2、分析 深度优先。 3、代码 1 int ans; 2 int diameterOfBinaryTree(TreeNode* root) { 3 ans = 1; 4 depth(root); 5 6 return ans - 1; 7 } 8 9 int depth(TreeNode *root){ 10 if (root == NULL) 11 return 0; 12 int L = ...
leetcode 543. Diameter of Binary Tree Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary treeisthe length of the longest path between any two nodesina tree. This path mayormaynotpassthrough the root. Example: Given a binary tree1 ...
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Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root. Example: Given a binary tree 1 / \ 2 3 / \ 4 5...
Leetcode 543. Diameter of Binary Tree 题目链接:Diameter of Binary Tree 题目大意:问题很简单,要求你去找出一颗二叉树的树直径(树中最长路) 题目思路:对于树直径,我们首先可以想到这样的想法,我们在树中找一条最长路径,这条最长路径一一定是从一个叶子节点出发,到达另一个叶子节点,也就是说,...
Can you solve this real interview question? Diameter of Binary Tree - Given the root of a binary tree, return the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This p
The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root. The length of a path between two nodes is represented by the number of edges between them. 英文版地址 leetcode.com/problems/d 中文版描述...
public int diameterOfBinaryTree(TreeNode root) { helper(root); return max; } private int max = 0; public int helper(TreeNode root) { if (root == null) { return 0; } int left = helper(root.left); int right = helper(root.right); max = Math.max(max, left+right); return Math...
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Given a binary tree 1 / \ 2 3 / \ 4 5 Return 3, which is the length of the path [4,2,1,3] or [5,2,1,3]. Note: The length of path between two nodes is represented by the number of edges between them. 思路 考虑路径经过根节点和不经过根节点的情况。递归处理。