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[算法]组合类问题
1,组合相关公式C(n,m)=n*(n-1)*(n-2)...*(n-m-1)/m!=n!/(m!*(n-m)!)C(n,m)=C(n,n-m)C(n+1,m)=C(n,m)+C(n,m-1)C(n,1)+C(n,2)+…+C(n,n)=2^n;2,相关算法Question 1: 输入一个字符串,打...
分类:编程语言   时间:2014-10-16 00:02:31    阅读次数:284
Euler Project question 1 in python way
# if we list all natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6, and 9. The sum of these multiples is 23. Find the sum of all t...
分类:编程语言   时间:2014-10-15 23:39:21    阅读次数:221
Euler Project question 2 in python way
# Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3...
分类:编程语言   时间:2014-10-15 23:13:51    阅读次数:245
Valid Palindrome
Valid Palindrome  Total Accepted: 22728 Total Submissions: 99271My Submissions Question  Solution  Given a string, determine if it is a palindrome, considering only alphanumeric char...
分类:其他好文   时间:2014-10-14 18:21:29    阅读次数:218
1013-----APUE----------线程用来处理哪些问题(转自知乎上的回答)
地址:http://www.zhihu.com/question/19901763原文:这么解释问题吧:1。单进程单线程:一个人在一个桌子上吃菜。2。单进程多线程:多个人在同一个桌子上一起吃菜。3。多进程单线程:多个人每个人在自己的桌子上吃菜。多线程的问题是多个人同时吃一道菜的时候容易发生争抢,例如...
分类:编程语言   时间:2014-10-13 22:26:57    阅读次数:167
Some question about Source Tree
GitHub和SourceTree入门教程分类:Java2014-09-14 01:121404人阅读评论(2)收藏举报sourcetreegithubsourcetree教程sourcetree使用-->本教程适用于主流的开源网站github和bitbucket-->在github上注册一个账号,...
分类:其他好文   时间:2014-10-13 18:28:29    阅读次数:231
Install tomcat 7.0.42 in ubuntu
fromehttp://askubuntu.com/questions/339169/how-to-install-tomcat-7-0-42-on-ubuntu-12-04-3-ltsNote: visit this question if you want to know why it's no...
分类:系统相关   时间:2014-10-12 16:45:38    阅读次数:296
Splitting Linked List
This is a very good linked list question, as there are tricky cases you have to consider, and getting them all right in one place is harder than it lo...
分类:其他好文   时间:2014-10-12 05:54:07    阅读次数:161
Delphi thread exception mechanism
http://www.techques.com/question/1-3627743/Delphi-thread-exception-mechanismi have a dilema on how threads work in delphi, and why at a moment when a ...
分类:Windows程序   时间:2014-10-10 19:14:44    阅读次数:303
Why isn't there a SendThreadMessage function?
Here's an interesting customer question:Windows hasPostMessageandSendMessage. It also hasPostThreadMessagebut noSendThreadMessage. Why isn't there aSe...
分类:其他好文   时间:2014-10-10 13:06:24    阅读次数:314
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