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Single Number I & II
Single Number I 问题描述: Given an array of integers, every element appears twice except for one. Find that single one. 解题思路: 既然除了某个元素出现一次外,其他所有元素都出现两次,那么可以异或数组的所有元素,得到的结果就是我们所要找的那个元素的值。 class Solu...
分类:其他好文   时间:2014-07-30 12:19:53    阅读次数:184
【HackerRank】 Find Digits
Find DigitsProblem StatementGiven a number you have to print how many digits in that number exactly divides that number.Input formatThe first line con...
分类:其他好文   时间:2014-07-30 11:55:13    阅读次数:250
mongodb学习(五) 查询
1. 按条件查询:db.users.find({"name":"MM1"})2.find的第二个参数可以指定要返回的字段:这里1 表示要显示的字段,0 表示要剔除的字段db.users.find({"name":"MM1"},{"name":1,"age":1})db.users.find({"na...
分类:数据库   时间:2014-07-30 11:36:03    阅读次数:236
[LeetCode] Sum Root to Leaf Numbers(bfs)
Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number.An example is the root-to-leaf path 1->2->3 which...
分类:其他好文   时间:2014-07-30 11:30:33    阅读次数:247
qt之旅-1纯手写Qt界面
通过手写qt代码来认识qt程序的构成,以及特性。设计一个查找对话框。下面是设计过程 1 新建一个empty qt project 2 配置pro文件 HEADERS += Find.h QT += widgets SOURCES += Find.cpp main.cpp 3 编写对话框的类 代码如下: //Find.h #ifndef FIND_H...
分类:其他好文   时间:2014-07-30 10:08:33    阅读次数:298
复杂链表的复制
问题描述: A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy of the list. 解题思路: 将1->2->3->4->NUL...
分类:其他好文   时间:2014-07-30 10:07:54    阅读次数:259
Lesson 31-32 Personal Habits
一 Words 1 foible 小缺点,小癖好 e.g. You could do Ebay,or dating or indulge 纵容,沉溺于another foible of choice.你可以上eBay购物,或者约会,或者纵容另外一个弱点。 2 obnoxious 讨厌的 eg. My...
分类:其他好文   时间:2014-07-30 07:39:03    阅读次数:274
MySQL 自定义函数CREATE FUNCTION实例
分享一个MySQL 自定义函数CREATE FUNCTION的实例。mysql> delimiter $$mysql> CREATE FUNCTION myFunction-> (in_string VARCHAR(255),-> in_find_str VARCHAR(20),-> in_repl...
分类:数据库   时间:2014-07-30 07:37:53    阅读次数:331
Best Time to Buy and Sell Stock III leetcode java
题目:Say you have an array for which the ith element is the price of a given stock on day i.Design an algorithm to find the maximum profit. You may com....
分类:编程语言   时间:2014-07-30 05:35:13    阅读次数:260
Best Time to Buy and Sell Stock II leetcode java
题目:Say you have an array for which the ith element is the price of a given stock on day i.Design an algorithm to find the maximum profit. You may com....
分类:编程语言   时间:2014-07-30 05:35:03    阅读次数:309
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