Ugly Numbers 题目 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 nu…

丑数 丑数是指不能被2,3,5以外的其他素数整除的数.把丑数从小到大排列起来,结果如下: 1,2,3,4,5,6,8,9,10,12,15,… 求第1500个丑数. 提示:从小到大生成各个丑数.最小的丑数是1,对于任意丑数x,2x,3x和5x也是丑数.使用一个优先队列保存已生成的丑数,每次取出最小的丑数,生成3个新的丑数.需要注意,同一个丑数有多种生成方式,所以需要判断一个丑数是否已经生成过. 题目链接:https://vjudge.net/contest/211547#problem/G #i…

题意 PDF 分析 用堆和集合维护即可. 时间复杂度\(O(1500 \log n)\) 代码 #include<iostream> #include<cstdio> #include<cstdlib> #include<cmath> #include<set> #include<map> #include<queue> #include<stack> #include<algorithm> #in…

Ugly Numbers Descriptions: 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…

[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…

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…