leetcode 129 Sum Root to Leaf Numbers 详细解答 技术标签: leetcode 二叉树 leetcode 129 Sum Root to Leaf Numbers 详细解答 解法1 迭代: 最开始的想法是将遍历的每一条路径都放到数组里,然后在求和。但这里其实不用,直接乘以10即可 解法2 递归:......
https://leetcode.com/problems/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. For...