They can usually be purchased in three sizes: ￡
5, ￡ 1 and a half pound bags. I even saw them to buy on eBay. Many companies are
cutting Tekpak bag of...
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其他好文 时间：
2014-06-16 09:23:39
阅读次数：
443
题目就是给出一组数，让我们测试其中有多少个是素数。
求素数有测试sqrt(n)个数的方法，有筛子方法，不过对于本题这样的题目来说就都不是高效的。
本题使用Miller Rabin素数测试法，效率奇高，对于不是极其大的整数测试都几乎是常数时间。令人神往的算法啊。
网上有个程序，好像是什么吉林的模板程序，不过我一直没看懂他是什么思路写的，是个AC的程序，不过却是错误的，呵呵，因为程序一直把9当做...
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其他好文 时间：
2014-06-15 18:48:07
阅读次数：
194
The Basics
Swift is a new programming language for iOS and OS X app development. Nonetheless, many parts of Swift will be familiar from your experience of developing in C and Objective-C.
Swift是用于开发...
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其他好文 时间：
2014-06-15 08:47:25
阅读次数：
229
坦克大战时间限制：1000ms | 内存限制：65535KB难度：3描述Many of us
had played the game "Battle city" in our childhood, and some people (like me)
even often play it on com...
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其他好文 时间：
2014-06-13 08:24:42
阅读次数：
221
Leather Mulberry spent so many years. Many
Mulberry handbags factory in southwest England. All bags are made from the
original pattern. They are not o...
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其他好文 时间：
2014-06-12 21:28:07
阅读次数：
328
There are many types of eating disorders. We
are most familiar with the three major disorders Anorexia Nervosa, Bulimia
Nervosa and Binge Eating Disor...
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其他好文 时间：
2014-06-12 21:17:19
阅读次数：
414
题目
Follow up for "Unique Paths":
Now consider if some obstacles are added to the grids. How many unique paths would there be?
An obstacle and empty space is marked as 1 and 0 respective...
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其他好文 时间：
2014-06-10 18:28:49
阅读次数：
207
问题：
You are climbing a stair case. It takes n steps to reach to the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
分析：
该问题是符合斐波那契数列的，具体...
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其他好文 时间：
2014-06-10 08:19:31
阅读次数：
194
题目
You are climbing a stair case. It takes n steps to reach to the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
方法
从后往前求解...
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其他好文 时间：
2014-06-10 07:38:21
阅读次数：
171
How many ways
Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2594 Accepted Submission(s): 1528
Problem Description
这是一个简单的生存游戏，你控...
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其他好文 时间：
2014-06-10 07:05:49
阅读次数：
188
