[LeetCode] Add Two Numbers II 两个数字相加之二
Input: root = [4,9,0,5,1] Output: 1026 Explanation: The root-to-leaf path 4->9->5 represents the number 495. The root-to-leaf path 4->9->1 represents the number 491. The root-to-leaf path 4->0 represents the number 40. Therefore, sum = 495 + 491 + 40 = 1026. ...
Right != nil { result += dfs(root.Right, pathSum + root.Right.Val) } return result } 题目链接: Sum Root to Leaf Numbers : leetcode.com/problems/s 求根节点到叶节点数字之和: leetcode.cn/problems/su LeetCode 日更第 365 天,感谢阅读至此的你 欢迎点赞、收藏、在看鼓励支持小满...
leetcode - Sum Root to Leaf Numbers 2013-11-06 09:25 张汉生 阅读(142) 评论(0) 收藏 举报 1 /** 2 * Definition for binary tree 3 * struct TreeNode { 4 * int val; 5 * TreeNode *left; 6 * TreeNode *right; ...
returntransNumToList(sum); } }; 在LeetCode上测试,不通过,原因是输入的两个正整数并不是int范围的,数字范围可以是无穷大的;所以不能用直接相加的方式来完成 思路二: 只能用链表逐个相加的方式;因为题目说了没有以0开头的除非元素本身就是零,所以
For example,"a puppy has 2 eyes 4 legs"is a sentence with seven tokens:"2"and"4"are numbers and the other tokens such as"puppy"are words. Given a stringsrepresenting a sentence, you need to check if all the numbers insare strictly increasing from left to right (i.e., other than ...
LeetCode-129. Sum Root to Leaf Numbers 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....
1. Description Number of Ways Where Square of Number Is Equal to Product of Two Numbers 2. Solution 解析:Version 1,分别计算两个数组的平方和以及所有组合乘积并统计对应值的个数,遍历每个数组平方和的个数,找到另一个数组对应的积的个数,二者相乘,加到三元组总个数中。Version 2进行进一步优化。
The root-to-leaf path 4->0 represents the number 40. Therefore, sum = 495 + 491 + 40 = 1026. 【Idea】 跟求path的题差不多, 只不过这里是num*10+node.val 在每层递归里作参数传递罢辽。 不再写了,木得意思 similar:257。 【Solution】 ...
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