2017年6月18日
594. Longest Harmonious Subsequence 最长的和谐子序列
摘要： Total Accepted: 5540Total Submissions: 14066Difficulty: EasyContributors:love_FawnWe define a harmonious array is an array where the difference between its maximum value and its minimum value is exact... 阅读全文
posted @ 2017-06-18 23:27 xiejunzhao 阅读(437) 评论(0) 推荐(0)
107. Binary Tree Level Order Traversal II 遍历二叉树2
摘要： Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For example:Given binary tree [3,9,20,null,null,15,7], ... 阅读全文
posted @ 2017-06-18 21:40 xiejunzhao 阅读(147) 评论(0) 推荐(0)
617.Merge Two Binary Trees 合并两个二叉树
摘要： Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not.You need to merge them into a new binary tree. ... 阅读全文
posted @ 2017-06-18 10:01 xiejunzhao 阅读(181) 评论(0) 推荐(0)