Given N axis-aligned rectangles where N > 0, determine if they all together form an exact cover of a rectangular region. Each rectangle is represented ...
分类:
其他好文 时间:
2016-09-01 14:33:47
阅读次数:
219
Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, ...
分类:
其他好文 时间:
2016-09-01 12:48:33
阅读次数:
142
Conventional sampling techniques are based on Shannon-Nyquist theory which states that the required sampling rate for perfect recovery of a band-limit... ...
分类:
其他好文 时间:
2016-08-22 23:00:31
阅读次数:
272
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library functio ...
分类:
其他好文 时间:
2016-08-16 07:02:12
阅读次数:
160
题目描述
完全数(Perfect number),又称完美数或完备数,是一些特殊的自然数。
它所有的真因子(即除了自身以外的约数)的和(即因子函数),恰好等于它本身。
例如:28,它有约数1、2、4、7、14、28,除去它本身28外,其余5个数相加,1+2+4+7+14=28。
给定函数count(int n),用于计算n以内(含n)完全数的个数。计算范围, 0
...
分类:
其他好文 时间:
2016-08-15 19:11:57
阅读次数:
203
题目链接:http://poj.org/problem?id=1274 The Perfect Stall Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 23088 Accepted: 10285 Description Far ...
分类:
其他好文 时间:
2016-08-11 15:51:51
阅读次数:
258
Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, ...
分类:
其他好文 时间:
2016-08-09 20:34:39
阅读次数:
125