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poj2109 Power of Cryptography
Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of...
分类:其他好文   时间:2015-05-01 17:28:38    阅读次数:153
LeetCode Count Primes
Description:Count the number of prime numbers less than a non-negative number,nclick to show more hints.References:How Many Primes Are There?Sieve of ...
分类:其他好文   时间:2015-04-30 12:05:00    阅读次数:102
[LeetCode]Count Primes
Description: Count the number of prime numbers less than a non-negative number, n click to show more hints. References: How Many Primes Are There? Sieve of Eratosthenes Credits: Speci...
分类:其他好文   时间:2015-04-29 10:06:42    阅读次数:134
[LeetCode 204] Count Primes
题目链接:count-primes Description: Count the number of prime numbers less than a non-negative number, n public class Solution { public int countPrimes(int n) { if(n <= 2) return 0; Lis...
分类:其他好文   时间:2015-04-28 23:02:38    阅读次数:225
【数学】Count Primes
题目:leetcode Count Primes Description: Count the number of prime numbers less than a non-negative number, n 分析: 求出比n小的素数的个数,这个问题可以用排除法做,参考http://www.cnblogs.com/grandyang/p/4462810.html ...
分类:其他好文   时间:2015-04-28 23:01:22    阅读次数:287
leetcode 204题求素数个数
Description: Count the number of prime numbers less than a non-negative number, n   提示晒数法: http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes https://primes.utm.edu/howmany.html   别人的代码:   ...
分类:其他好文   时间:2015-04-28 22:49:39    阅读次数:238
Count Primes
Description:Count the number of prime numbers less than a non-negative number,nReferences:How Many Primes Are There?Sieve of Eratosthenes由于一个合数总是可以分解成...
分类:其他好文   时间:2015-04-28 22:39:09    阅读次数:164
[LeetCode] Count Primes
Count Primes Description: Count the number of prime numbers less than a non-negative number, n 解题思路: 题意为求小于n的质数的个数。有两种方法: 1、naive办法,对小于n的每个数,检查是否为质数。而检查m是否为质数,需要验证是否都不能被2~pow(m, 0.5)整...
分类:其他好文   时间:2015-04-28 21:07:26    阅读次数:155
[LeetCode] Count Primes 质数的个数
Description:Count the number of prime numbers less than a non-negative number,nclick to show more hints.References:How Many Primes Are There?Sieve of ...
分类:其他好文   时间:2015-04-28 15:35:41    阅读次数:144
LeetCode - Count Primes
判断小于n数中素数的个数,如果用普通的判断方法会超时,这里使用筛选法。 具体请参考:http://blog.csdn.net/liukehua123/article/details/5482854public class Solution { public int countPrimes(i...
分类:其他好文   时间:2015-04-28 01:39:20    阅读次数:120
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