leetcode263. [Math]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 includes another prime factor 7.

Note that 1 is typically treated as an ugly number.

class Solution(object):    def isUgly(self, num):        if num==0:            return False        flag=True        while(flag):            if num%2==0:                num=num/2            elif num%3==0:                num=num/3            elif num%5==0:                num=num/5            else:                flag=False        if num==1:            flag=True        return flag