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Product of Array Except Self
Given an array ofnintegers wheren> 1,nums, return an arrayoutputsuch thatoutput[i]is equal to the product of all the elements ofnumsexceptnums[i].Solv...
分类:其他好文   时间:2015-09-11 06:47:00    阅读次数:143
SQL语句NOT EXISTS实现除法运算
了解关系数据库的人应该都知道4种关系操作符,加、减、乘、除。具体到SQL语句中,前3种分别是union、except、笛卡尔积,但是除法没有具体的关键字,需要我们自己写SQL语句来实现,这就需要用到not exists了。 举个比较俗的例子,一个成绩表,3个字段 sid、cid,grade,分别表....
分类:数据库   时间:2015-09-10 12:40:00    阅读次数:461
Python 的多进程模块(multiprocessing)
Python的多进程Python 的MD5模块try-except-finally的使用方法:finally最后关闭一些东西。Python的多线程模块Python的pika模块mq模块出现错误:rabbitting 命令教程:http://zhanghua.1199.blog.163.com/blo...
分类:编程语言   时间:2015-09-09 21:02:47    阅读次数:208
[LeetCode]Product of Array Except Self
Product of Array Except SelfGiven an array ofnintegers wheren> 1,nums, return an arrayoutputsuch thatoutput[i]is equal to the product of all the eleme...
分类:其他好文   时间:2015-09-07 11:03:18    阅读次数:160
[LeetCode]Single Number II
Single Number IIGiven an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a lin...
分类:其他好文   时间:2015-09-06 21:22:26    阅读次数:207
LeetCode -- Delete Node in a Linked List
Question:Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linked list is1 -> 2...
分类:其他好文   时间:2015-09-06 12:50:59    阅读次数:149
python第二天 - 异常处理
简单罗列一下知识点:一、基本写法try: html = _respose.read().decode('utf-8')except Exception as e: pass捕获多个异常try: x = int(input('input x:')) y = int(input('inp...
分类:编程语言   时间:2015-09-05 15:04:12    阅读次数:144
[LeetCode]Delete Node in a Linked List
Delete Node in a Linked ListWrite a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the l...
分类:其他好文   时间:2015-09-04 12:25:52    阅读次数:119
pat1069. The Black Hole of Numbers (20)
1069. The Black Hole of Numbers (20)时间限制100 ms内存限制65536 kB代码长度限制16000 B判题程序Standard作者CHEN, YueFor any 4-digit integer except the ones with all the dig...
分类:其他好文   时间:2015-09-03 17:50:50    阅读次数:185
做出决策(二)
判断,循环,异常处理使用if....:else:语句if-else语句的基本格式和shell中基本相同,但是python对段落的缩进要求严格,需要特别注意:在判断语句中嵌套判断:使用elif和else:循环:while:for:异常处理:try:except:语句由于fridge_contents字典中并没有juice这个key,所以p..
分类:其他好文   时间:2015-09-02 19:19:43    阅读次数:154
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