[POJ1338]Ugly Numbers】的更多相关文章

[POJ1338]Ugly Numbers 试题描述 Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, ... shows the first 10 ugly numbers. By convention, 1 is included. Given the integer n,write a program to find an…
题意:一个数的质因子能是2, 3, 5, 那么这个数是丑数. 思路: 打表或者递推. 打表: 若该数为丑数,那么一定能被2 或者3, 或者5 整除, 除完之后则为1. #include <iostream> #include <fstream> using namespace std; ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,…
Ugly Numbers Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 21918 Accepted: 9788 Description Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, - shows the first 10 ugly numbers.…
转载请注明出处:viewmode=contents">http://blog.csdn.net/u012860063? viewmode=contents 题目链接:id=1338">http://poj.org/problem?id=1338 Description Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence  1, 2, 3, 4, 5, 6, 8, 9, 1…
https://leetcode.com/problems/ugly-number/ 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 example, 6, 8 are ugly while 14 is not ugly since it include…
Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, …shows the first 11 ugly numbers. By convention, 1 is included.Write a program to find and print the 150′th ugly number. METHOD 1 (Simple…
 Ugly Numbers  Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, ... shows the first 11 ugly numbers. By convention, 1 is included. Write a program to find and print the 1500'th ugly num…
题目链接:http://poj.org/problem?id=1338 Ugly Numbers Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21920   Accepted: 9789 Description Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10,…
丑数(Ugly Numbers, UVa 136) 题目描述 我们把只包含因子2.3和5的数称作丑数(Ugly Number).求按从小到大的顺序的第1500个丑数.例如6.8都是丑数,但14不是,因为它包含因子7.习惯上我们把1当做第一个丑数. 算法实现 版本1:错误版本 //#define LOCAL #include<iostream> #include<cstdio> #include<queue> /* 输出第1500个丑数 */ using namespac…
UVA.136 Ugly Numbers (优先队列) 题意分析 如果一个数字是2,3,5的倍数,那么他就叫做丑数,规定1也是丑数,现在求解第1500个丑数是多少. 既然某数字2,3,5倍均是丑数,且1为丑数,那么不妨从1开始算起.算完之后2,3,5均为丑数,然后再从2算起,4,5,10均为丑数--直到算到第1500个即可.那么有如下的问题: 如何从算出来的丑数中取出最小的? 如何保证没有计算重复的丑数? 对于第一个问题,可以采用优先队列的方法,即有序的队列,且为升序,每次只需要取出队首元素即可…