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LeetCode Factorial Trailing Zeroes
Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.Credits:Special thanks to@tsf...
分类:其他好文   时间:2014-12-30 22:01:42    阅读次数:107
一个用户统计函数调用事件的装饰器
装饰器前面提过了,采用python的闭包特性实现: from time import time from time import sleep def count_time(): def tmp(func): def wrapped(*args, **kargs): begin_time = time...
分类:其他好文   时间:2014-12-30 22:01:11    阅读次数:151
【leetcode】Best Time to Buy and Sell Stock II
Best Time to Buy and Sell Stock IISay you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the ...
分类:其他好文   时间:2014-12-30 21:52:44    阅读次数:198
HDU - 1233 - 还是畅通工程 (最小生成树!!)
还是畅通工程 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 27443    Accepted Submission(s): 12212 Problem Description 某省调查乡村交通状况,得到的统计表...
分类:其他好文   时间:2014-12-30 20:50:49    阅读次数:216
hdu5001---Walk
Walk Time Limit: 30000/15000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 651    Accepted Submission(s): 402 Special Judge Problem Description I used to th...
分类:其他好文   时间:2014-12-30 20:44:52    阅读次数:195
[leetcode]Factorial Trailing Zeroes
问题描述: Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. 基本思想 尾0的个数取决于5的个数。 代码: int trailingZeroes(int n) { //...
分类:其他好文   时间:2014-12-30 20:43:23    阅读次数:132
python实现多播数据的发送和接收
在项目中,YS私有协议用到多播技术,在验证其安全特性时用到python去发送多播包,在此做个记录。 多播服务器用于向多播组发送多播数据包,其实现代码如下: #coding:utf-8, import socket import time ANY = '0.0.0.0' SENDERPORT=1501...
分类:编程语言   时间:2014-12-30 20:32:46    阅读次数:234
mysql数据库日期是varchar类型的时间比较查询
单纯的字符串比较结果不精确.select*from表明wheretimes>'2088/12/8 10:02:40'(×)转换函数如下(数据库为varchar):select*fromh_hotelcontextwherenow()betweenSTR_TO_DATE(Start_time,'%Y-...
分类:数据库   时间:2014-12-30 20:28:38    阅读次数:401
Factorial Trailing Zeroes
Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.只有2 * 5才会产生0只要计算出因子中2和5的个数取小的...
分类:其他好文   时间:2014-12-30 20:27:13    阅读次数:169
HDU - 1863 - 畅通工程 (最小生成树!!prim算法!!)
畅通工程 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 18223    Accepted Submission(s): 7726 Problem Description 省政府“畅通工程”的目标是使全省任何两个...
分类:编程语言   时间:2014-12-30 19:08:26    阅读次数:178
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