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【leetcode】10.Regular Expression Matching
题目描述: Implement regular expression matching with support for '.' and '*'. 解题思路: 这道题如果只考虑“.”的话其实很好完成,所以解题的关键在于处理“*”的情况。以为“*”与前一个字母有关,所以应该整体考虑ch*……的情况。c ...
分类:其他好文   时间:2016-06-14 06:22:03    阅读次数:394
8. String to Integer (atoi)
1. 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 se ...
分类:其他好文   时间:2016-06-13 20:39:29    阅读次数:224
225. Implement Stack using Queues
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分类:其他好文   时间:2016-06-13 13:27:27    阅读次数:126
LRU Cache
这是一道非常高频,非常经典的题目: 首先分析下题意: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get  ...
分类:系统相关   时间:2016-06-12 21:46:17    阅读次数:156
Android studio 快捷键(Mac)
Code alt+F7:Find usage alt+command+L:格式化代码 alt+command+O:优化import(去掉无用的import) command+O:Override Methods command+I:Implement Methods command+B:Declar ...
分类:移动开发   时间:2016-06-12 12:12:25    阅读次数:507
【Leetcode】String to Integer (atoi)
题目链接:https://leetcode.com/problems/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, plea...
分类:其他好文   时间:2016-06-12 03:25:55    阅读次数:130
【Leetcode】Reverse Linked List
原题链接:https://leetcode.com/problems/reverse-linked-list/ 题目: Reverse a singly linked list. Hint: A linked list can be reversed either iteratively or recursively. Could you implement both? ...
分类:其他好文   时间:2016-06-12 03:03:53    阅读次数:135
MIT 6.828 学习笔记6 Lab4实验报告
Lab4实验报告 Execrise 1 Implement mmio_map_region in kern/pmap.c. // mmio_map_region() uintptr_t ret = base; size = ROUNDUP(size, PGSIZE); base = base + size; if (base >= MMIOLIM) { panic("larg...
分类:其他好文   时间:2016-06-12 02:25:38    阅读次数:438
[LeetCode][10]Regular Expression Matching解析 -Java实现
Q: 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:编程语言   时间:2016-06-11 18:57:56    阅读次数:207
strstr() strpos() 获取db报错,判断报错中是否包含字符串,判断错误类型
model中直接获取添加公司的错误.(公司名称不能重复) $enterprise_id = $this->add($enterprisedata ); $err = $this->getDbError(); $err =="1062:Duplicate entry 'aaa' for key 'en ...
分类:数据库   时间:2016-06-11 17:19:22    阅读次数:186
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