leetcode129 (1) 썸네일형 리스트형 [python][leetcode 129]. Sum Root to Leaf Numbers -- dfs,recur You are given the root of a binary tree containing digits from 0 to 9 only. Each root-to-leaf path in the tree represents a number. For example, the root-to-leaf path 1 -> 2 -> 3 represents the number 123. Return the total sum of all root-to-leaf numbers. Test cases are generated so that the answer will fit in a 32-bit integer. A leaf node is a node with no children. 한줄해석. 좌측과 같은 tree가 있을때, lea.. 이전 1 다음
