此解法的时间复杂度是O(n),空间复杂度是O(n)。 publicintdiameterOfBinaryTree(TreeNode root){ helper(root);returnmax; }privateintmax =0;publicinthelper(TreeNode root){if(root ==null) {return0; }intleft = helper(root.left);intright = helper(root.right); max = Math.max(max, left+right...
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 ...
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 \ 2 3 / \ 1. 2. 3...
原题链接在这里:https://leetcode.com/problems/tree-diameter/ 题目: Given an undirected tree, return its diameter: the number of edges in a longest path in that LeetCode DFS BFS i++ java 转载 mb5ff5930cde1cd 2020-02-26 08:09:00 134阅读 2评论 543. Diameter of Binary Tree* 543...
• The role of the machine to which the user is connected. The right side of the banner: • Shows the user name of the currently logged-in user. • Provides a link to log out of the GUI. Main Menu Left side of screen, under banners A tree-structured menu of all operations ...
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...
Time Complexity: O(n), n is number of nodes in the tree. Space: O(logn). AC Java: 1/**2* Definition for a binary tree node.3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val = x; }8* }9*/10publicclassSolution {11public...
需要两个function,因为getDepth function 返回的都是depth,不是diameter,所以需要diameterOfBinaryTree 来单独返回diameter; 每一个点的最大直径等于左边的depth 加上 右边的depth,取所有点中最大的值。 1/**2* Definition for a binary tree node.3* public class TreeNode {4* int val;5* TreeNode left;6...
原题链接在这里:https://leetcode.com/problems/tree-diameter/ 题目: Given an undirected tree, return its diameter: the number of edges in a longest path in that LeetCode DFS BFS i++ java 转载 mb5ff5930cde1cd 2020-02-26 08:09:00 134阅读 2评论 543. Diameter of Binary Tree* 543...
原题链接在这里:https://leetcode.com/problems/tree-diameter/ 题目: Given an undirected tree, return its diameter: the number of edges in a longest path in that LeetCode DFS BFS i++ java 转载 mb5ff5930cde1cd 2020-02-26 08:09:00 134阅读 2评论 543. Diameter of Binary Tree* 543...