Package g3001_3100.s3099_harshad_number

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    3099 - Harshad Number.

    Easy

    An integer divisible by the sum of its digits is said to be a Harshad number. You are given an integer x. Return the sum of the digits of x if x is a Harshad number, otherwise, return -1.

    Example 1:

    Input: x = 18

    Output: 9

    Explanation:

    The sum of digits of x is 9. 18 is divisible by 9. So 18 is a Harshad number and the answer is 9.

    Example 2:

    Input: x = 23

    Output: \-1

    Explanation:

    The sum of digits of x is 5. 23 is not divisible by 5. So 23 is not a Harshad number and the answer is -1.

    Constraints:

    • 1 <= x <= 100

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer sumOfTheDigitsOfHarshadNumber(Integer x)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait