标签：eterm als equals RKE path children which bin term
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.
Note: A leaf is a node with no children.
Example:
Given the below binary tree and sum = 22,
5
/ 4 8
/ / 11 13 4
/ \ 7 2 1
return true, as there exist a root-to-leaf path 5->4->11->2 which sum is 22.
标签：eterm als equals RKE path children which bin term
原文地址：https://www.cnblogs.com/chucklu/p/10695382.html
