Programming Issue

#1

public static void main(String args[]) {
Scanner sc = new Scanner(System.in);

		int num = sc.nextInt();
		int aman = num;
		int ans = 0;
		while (num != 0) {
			int rem = num % 10;
			ans = ans + (rem * rem * rem);
			num = num / 10;
		}
		if (ans == aman) {
			System.out.println("true");
		} else
			System.out.println("false");

}

Here is my Armstrong number.Out of 7 I am able to pass only 5 test cases.please clarify my doubt what changes my code required.

#2

@amangaur078,

Algo:

  • Take input of number.
  • Calculate the number of digits of the number in a variable say , cnt.
  • Extract digit one by one from the number(using % 10).
  • Raise it to the power of number of digits and add it to sum.
  • After the loop check if the sum is equal to the original number.
    1. If yes, print true
    2. otherwise, print false.

You need to raise it to the power of total digits instead of just 3.

#3

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