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[LeetCode]Single Number
Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using...
分类:其他好文   时间:2015-04-26 09:14:50    阅读次数:108
Java [leetcode 10] Regular Expression Matching
问题描述:Implement regular expression matching with support for '.' and '*'.'.' Matches any single character.'*' Matches zero or more of the preceding ele...
分类:编程语言   时间:2015-04-25 22:41:59    阅读次数:172
Java [leetcode 8] String to Integer (atoi)
问题描述:Implement atoi to convert a string to an integer.Hint: Carefully consider all possible input cases. If you want a challenge, please do not see be...
分类:编程语言   时间:2015-04-25 14:51:50    阅读次数:148
[LeetCode] Implement strStr()
Implement strStr() Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 解题思路: 1、暴力法。逐一匹配,然后回溯。代码如下,但是产生超时错误。 class...
分类:其他好文   时间:2015-04-24 16:23:48    阅读次数:86
【Next Permutation】cpp
题目:Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangement is not poss...
分类:其他好文   时间:2015-04-23 17:17:59    阅读次数:170
LeetCode 10 Regular Expression Matching
题目: Implement regular expression matching with support for '.' and '*'. '.' Matches any single character. '*' Matches zero or more of the preceding element. The matching should cover the entire...
分类:其他好文   时间:2015-04-21 22:49:16    阅读次数:168
Pow(x, n)
https://leetcode.com/problems/powx-n/Implement pow(x,n).解题思路:这种math的题目本来就不擅长,看到题目tag里有binary search,很是疑问,不知道怎么解。直接写网友的思路吧,其实就是递归。对幂数n折半递归,递归结束的条件为n达到0...
分类:其他好文   时间:2015-04-21 17:58:31    阅读次数:116
LeetCode 8 String to Integer (atoi)
题目: Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible i...
分类:其他好文   时间:2015-04-20 15:04:26    阅读次数:114
LeetCode: Next Permutation
Title:Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangement is not p...
分类:其他好文   时间:2015-04-20 12:52:32    阅读次数:131
strstr实现方式之一
strstr char?*ho_strstr(const?char?*s1,?const?char?*s2)?{ ????const?char?*p1,?*p2; ???? ????if?(*s2?==?‘\0‘) ????????return?(char?*)s1; ???????? ????f...
分类:其他好文   时间:2015-04-19 19:51:43    阅读次数:118
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