Description
Mr.Dog was fired by his company. In order to support his family, he must find a new job as soon as possible. Nowadays, It's hard to have a job, since there are swelling numbers of the...
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其他好文 时间：
2014-07-27 23:57:39
阅读次数：
630
DescriptionYou've decided to carry out a survey in the theory of prime numbers. Let us remind you that a prime number is a positive integer that has e...
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其他好文 时间：
2014-07-27 22:51:29
阅读次数：
288
DescriptionYou've decided to carry out a survey in the theory of prime numbers. Let us remind you that a prime number is a positive integer that has e...
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其他好文 时间：
2014-07-27 22:31:39
阅读次数：
809
定理：一个正整数 n 可以用素因子唯一表示为 p1^r1 * p2^r2 * ...
pk^rk (其中 pi 为素数) , 那么这个数的因子的个数就是，(r1+1)*(r2+1)*...*(rk+1).
理解：为什么是加1之后再相乘，因为一个数的的因子数至少为1和他自身，但因为r1，r2。。可以为0，所以因子的个数为（r1+1）。。。
拓展一下：
定理1： 一个正整数 n 可以用素...
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其他好文 时间：
2014-07-26 15:32:46
阅读次数：
194
Problem Description:
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers
sums to T.
Each number in C may only b...
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其他好文 时间：
2014-07-26 15:24:02
阅读次数：
252
题目：Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2],The lon....
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编程语言 时间：
2014-07-26 14:50:11
阅读次数：
226
Given two sequences of numbers : a[1], a[2], ...... , a[N], and b[1], b[2], ...... , b[M] (1 #includeintnext[10005];ints[1000005],p[10005];intn,m;void...
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其他好文 时间：
2014-07-26 13:46:34
阅读次数：
297
Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.N...
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其他好文 时间：
2014-07-26 01:42:16
阅读次数：
263
Given a collection of numbers, return all possible permutations.For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2], [2,1,3], [2,3,...
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其他好文 时间：
2014-07-26 01:38:56
阅读次数：
214
Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily large and are non-nega...
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其他好文 时间：
2014-07-26 00:23:26
阅读次数：
242
