LeetCode之263. Ugly Number

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如果一个数的质因子只包括2,3,5,那么这个数n可以表示为:
n=2x+3y+5z

AC代码:

import java.math.BigInteger;

public class Solution {

    public boolean isUgly(int n) {
       if(n<1) return false;
       while(n%2==0) n/=2;
       while(n%3==0) n/=3;
       while(n%5==0) n/=5;
       return n==1;
    }

}

题目来源: https://leetcode.com/problems/ugly-number/

时间: 2024-10-29 19:11:39

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