Java Interface Hackerrank Solution
For Explanation Watch Video:
Sample Input
6
Sample Output
I implemented: AdvancedArithmetic
12
Code:
import java.util.*;interface AdvancedArithmetic{ int divisor_sum(int n);}
//Write your code hereclass MyCalculator implements AdvancedArithmetic{ public int divisor_sum(int n){ int sum =0; for(int i=1;i<=n;i++){ if(n%i==0){ sum += i; } } return sum; }}
class Solution{ public static void main(String []args){ MyCalculator my_calculator = new MyCalculator(); System.out.print("I implemented: "); ImplementedInterfaceNames(my_calculator); Scanner sc = new Scanner(System.in); int n = sc.nextInt(); System.out.print(my_calculator.divisor_sum(n) + "\n"); sc.close(); } /* * ImplementedInterfaceNames method takes an object and prints the name of the interfaces it implemented */ static void ImplementedInterfaceNames(Object o){ Class[] theInterfaces = o.getClass().getInterfaces(); for (int i = 0; i < theInterfaces.length; i++){ String interfaceName = theInterfaces[i].getName(); System.out.println(interfaceName); } }}
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