1 /** 2 * Definition for binary tree 3 * public
class TreeNode { 4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 *
TreeNo...
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其他好文 时间：
2014-05-05 22:44:13
阅读次数：
328
Link:http://oj.leetcode.com/problems/balanced-binary-tree/Given a binary tree,
determine if it is height-balanced.For this problem, a height-balanced ...
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其他好文 时间：
2014-05-05 22:29:55
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382
题目：
Given an array and a value, remove all instances of that value in place and return the new length.
The order of elements can be changed. It doesn't matter what you leave beyond the new len...
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其他好文 时间：
2014-05-05 12:58:57
阅读次数：
294
明知道明早要考试，可还是忍不住打开电脑想水一题。不过还是在这题上WA了好几次....看见自己有多渣！有个道理发现了很久，直到今天才意识到它的严重性，反复的做题只能让你不断的巩固已有的知识，而对于新知识的探索是少只又少，所以必须要通过多读书来获取新的知识，这样才能够扩充知识面。而之前的我就是忽略了读书...
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其他好文 时间：
2014-05-04 12:18:21
阅读次数：
218
关于permutation的讲解，请参见http://blog.csdn.net/xuqingict/article/details/24840183
下列题目的讲解均是基于上面的文章：
题1：
Next Permutation
Total Accepted: 8066 Total
Submissions: 32493My Submissions
...
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其他好文 时间：
2014-05-04 00:01:36
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343
Say you have an array for which theithelement
is the price of a given stock on dayi.Design an algorithm to find the maximum
profit. You may complete a...
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其他好文 时间：
2014-05-03 23:21:20
阅读次数：
292
题目：
Given a string S and a string T, count the number of distinct subsequences of T in S.
A subsequence of a string is a new string which is formed from the original string by deleting some (c...
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其他好文 时间：
2014-05-03 21:48:19
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252
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without an...
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其他好文 时间：
2014-05-03 21:35:49
阅读次数：
310
题目
Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321
Have you thought about this?
Here are some good questions to ask before coding. Bonus points...
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其他好文 时间：
2014-05-03 17:35:30
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345
Given a set of distinct integers, S, return all possible subsets.
Note:
Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets.
For exa...
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其他好文 时间：
2014-05-03 15:47:53
阅读次数：
289
