StringPrograms/ArmstrongNumber.java at master · learncodesdaily/StringPrograms · GitHub

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package strings;

public class ArmstrongNumber {

	static void checkArmstrongNumber(int number)
    {
        int tempNumber = number;

        int noOfDigits = String.valueOf(number).length();

        int sum = 0;

        while (tempNumber != 0)
        {
            int lastDigit = tempNumber % 10;

            int lastDigitToThePowerOfNoOfDigits = 1;

            for(int i = 0; i < noOfDigits; i++)
            {
                lastDigitToThePowerOfNoOfDigits = lastDigitToThePowerOfNoOfDigits * lastDigit;
            }

            sum = sum + lastDigitToThePowerOfNoOfDigits;

            tempNumber = tempNumber / 10;
        }

        if (sum == number)
        {
            System.out.println(number+" is an armstrong number");
        }
        else
        {
            System.out.println(number+" is not an armstrong number");
        }
    }
	public static void main(String[] args) {

		checkArmstrongNumber(153);

        checkArmstrongNumber(371);

        checkArmstrongNumber(9474);

        checkArmstrongNumber(54748);

        checkArmstrongNumber(407);

        checkArmstrongNumber(1674);
	}

}