728. Self Dividing Numbers

A self-dividing number is a number that is divisible by every digit it contains.

For example, 128 is a self-dividing number because 128 % 1 == 0, 128 % 2 == 0, and 128 % 8 == 0.

Also, a self-dividing number is not allowed to contain the digit zero.

Given a lower and upper number bound, output a list of every possible self dividing number, including the bounds if possible.

Example 1:

Input: 
left = 1, right = 22
Output: [1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 22]

Note:

 

• The boundaries of each input argument are 1 <= left <= right <= 10000.

 

Python

 
class Solution(object):
    def selfDividingNumbers(self, left, right):
        """
        :type left: int
        :type right: int
        :rtype: List[int]
        """
        a = []
        for i in range(left, right + 1):
            if self.isDN(i):
                a.append(i)
        return a
            
            
    def isDN(self, num):
        if str(0) in str(num):
            return False
        for i in str(num):
            if num % int(i) != 0:
                return False
        return True