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JS练习
1、JS编程输出任意两数之间的水仙花数, 水仙花数:是指一个 n 位数 ( n≥3 ),它的每个位上的数字的 n 次幂之和等于它本身。(例如:1^3 + 5^3+ 3^3 = 153) 输出结果: 2、关于质数的编程题 质数(prime number):在大于1的自然数中,除了1和它本身以外不再有其 ...
分类:Web程序   时间:2016-09-13 11:25:48    阅读次数:183
LeetCode-Super Ugly Number
Write a program to find the nth super ugly number. Super ugly numbers are positive numbers whose all prime factors are in the given prime list primes ...
分类:其他好文   时间:2016-09-13 06:44:19    阅读次数:134
【LeetCode】204. Count Primes 解题小结
题目: Description: Count the number of prime numbers less than a non-negative number, n. 这个题目有提示,计算素数的方法应该不用多说。 ...
分类:其他好文   时间:2016-09-11 10:19:35    阅读次数:163
【LeetCode】263. Ugly Number
题目: Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For ...
分类:其他好文   时间:2016-09-10 16:08:35    阅读次数:163
Prime Land(poj 1365)
题意:这题题意难懂,看了题解才知道的。比如第二组sample,就是5^1*2^1=10, 求10-1即9的质因数分解,从大到小输出,即3^2.本来很简单的嘿,直接最快速幂+暴力最裸的就行了。 #include<cstdio> #include<cstring> #include<iostream> ...
分类:其他好文   时间:2016-09-04 22:09:25    阅读次数:152
WeChall_Prime Factory (Training, Math)Training: WWW-Robots (HTTP, Training)
In this little training challenge, you are going to learn about the Robots_exclusion_standard.The robots.txt file is used by web crawlers to check if ...
分类:Web程序   时间:2016-09-04 17:15:55    阅读次数:285
WeChall_Prime Factory (Training, Math)
Your task is simple:Find the first two primes above 1 million, whose separate digit sums are also prime.As example take 23, which is a prime whose dig ...
分类:其他好文   时间:2016-09-04 16:04:31    阅读次数:197
UVa10780
10780 Again Prime? No time.The problem statement is very easy. Given a number n you have to determine the largest power of m,not necessarily prime, th ...
分类:其他好文   时间:2016-09-04 01:30:39    阅读次数:166
UVa524 Prime Ring Problem (回溯法)
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分类:其他好文   时间:2016-09-04 01:26:23    阅读次数:140
(数学+尺取法)2739 - Sum of Consecutive Prime Numbers
原题链接:http://poj.org/problem?id=2739 题意:问一个数有几种方法用连续的素数和表示。 分析:其实就是很简单,先打表,然后对prime数组跑一波尺取法,如果==n就ans++。 代码: ...
分类:其他好文   时间:2016-09-03 06:20:26    阅读次数:155
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