题目如下：
Given two strings S1 and S2, S = S1 - S2 is defined to be the remaining string after taking all the characters in S2 from
S1. Your task is simply to calculate S1 - S2 for any given stri...
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其他好文 时间：
2015-07-20 14:26:45
阅读次数：
127
Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive integer...
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移动开发 时间：
2015-07-20 10:37:56
阅读次数：
130
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr...
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其他好文 时间：
2015-07-20 10:27:15
阅读次数：
121
bracelet英 /bre?sl?t/ 美 /bresl?t/necklace英 /nekl?s/ 美 /n?kl?sIs there any food left? 还有吃的吗？Is the climate dry here?flea marketWhat about this one in na...
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其他好文 时间：
2015-07-19 14:59:38
阅读次数：
335
Implement regular expression matching with support for'.'and'*'.'.' Matches any single character.'*' Matches zero or more of the preceding element.The...
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其他好文 时间：
2015-07-19 14:55:38
阅读次数：
116
题目如下：
The task is simple: given any positive integer N, you are supposed to count the total number of 1's in the decimal form of the integers from 1 to N. For example, given N being 12, there a...
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其他好文 时间：
2015-07-19 13:28:24
阅读次数：
131
Wildcard MatchingImplement wildcard pattern matching with support for'?'and'*'.'?' Matches any single character.'*' Matches any sequence of characters...
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编程语言 时间：
2015-07-19 01:18:52
阅读次数：
208
官网说明：Normally, a slave does not log to its own binary log any updates that are received from a master server. This option tells the slave to log the u...
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数据库 时间：
2015-07-18 10:51:32
阅读次数：
817
Implement regular expression matching with support for'.'and'*'.'.' Matches any single character.'*' Matches zero or more of the preceding element.The...
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其他好文 时间：
2015-07-18 08:22:25
阅读次数：
132
一，在桌面上新建立一个工程，在ViewController.m中输入如下代码：- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically f...
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其他好文 时间：
2015-07-17 20:44:54
阅读次数：
103
