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
原题地址:https://oj.leetcode.com/problems/unique-paths-ii/题意:Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many ...
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编程语言 时间:
2014-06-15 23:33:26
阅读次数:
353
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
题目大意:
问A-B 走K 部的方法数。
如果矩阵 a 为任意一个点到另外一个点 走 1 步的方法数
那么 a*a 就是任意一个点到另外一个点 走 2 步的方法数
。。。
那么直接快速幂。
#include
#include
#include
#include
#include
#define N 10
using namespace std;
in...
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其他好文 时间:
2014-06-15 18:02:55
阅读次数:
212
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
Description:You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways c...
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其他好文 时间:
2014-06-15 06:37:02
阅读次数:
200
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