摘要: Given a binary tree, return the preorder traversal of its nodes' values. Example Given: 1 / \ 2 3 / \ 4 5 return [1,2,4,5,3]. without using recursion. 阅读全文
posted @ 2017-07-25 10:45 YuriFLAG 阅读(90) 评论(0) 推荐(0)