1. Sum Root to Leaf Numbers Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the root-to-leaf path1->2->3which represents the number123. Find the total sum of all root-to-leaf numbers. Note: A leaf is a node with...
=nil{result+=dfs(root.Left,pathSum+root.Left.Val)}// 如果右子结点不为空,则递归处理右子结点ifroot.Right!=nil{result+=dfs(root.Right,pathSum+root.Right.Val)}returnresult} 题目链接: Sum Root to Leaf Numbers : https://leetcode.com/problems/sum-root-to-leaf-numbers/ 求根节点到叶节点数...
Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the root-to-leaf path1->2->3which represents the number123. Find the total sum of all root-to-leaf numbers. For example, 1 / \ 2 3 The root-to-leaf path1->2repres...
Given a binary tree containing digits from 0-9An example is the root-to-leaf path 1->2->3 which represents the number 123. Find the total sum of all root-to-leaf numbers. For example, 1 / \ 2 3 The root-to-leaf path 1->2...
Find the total sum of all root-to-leaf numbers. For example, The root-to-leaf path 1->2 represents the number 12. The root-to-leaf path 1->3 represents the number 13. Return the sum = 12 + 13 =25. 思路 求根节点到叶节点的路径组合数字之和,如上样例。
An example is the root-to-leaf path 1->2->3 which represents the number 123. Find the total sum of all root-to-leaf numbers. Note:A leaf is a node with no children. Example: Input: [1,2,3] ...
Find the total sum of all root-to-leaf numbers. For example, 1 / 2 3 The root-to-leaf path 1->2 represents the number 12. The root-to-leaf path 1->3 represents the number 13. Return the sum = 12 + 13 = 25. 题意:一个二叉树每个节点是一个0-9的数字,从根节点到叶子节点可以看...
public int sumNumbers(TreeNode root) { return getSum(root, 0); } private int getSum(TreeNode root, int curSum) { // condition if(root == null) { return 0; } curSum = curSum*10 + root.val; if(root.left==null && root.right==null) { return curSum; } // recursion return ...
129. Sum Root to Leaf Numbers # 题目 # Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An example is the root-to-leaf path 1->2->3 which represents the number 123. Find the total sum of all root-to-
Find the total sum of all root-to-leaf numbers. For example, 1 / \ 2 3 The root-to-leaf path1->2represents the number12. The root-to-leaf path1->3represents the number13. Return the sum = 12 + 13 =25. 题目本身看起来很简单的,但是如果对于对属性结构和递归编程不是那么熟的人来说...