LeetCode Q257: Binary Tree Paths

Total Accepted: 44011 Total Submissions: 155436 Difficulty: Easy

Given a binary tree, return all root-to-leaf paths.

For example, given the following binary tree:

   1
 /   \
2     3
 \
  5

All root-to-leaf paths are:

["1->2->5", "1->3"]

Solution:

Round 2 solution: