Java is an object oriented language and some concepts may be new. Take breaks when needed, and go over the examples as many times as needed.
Armstrong Number in Java: A positive number is called armstrong number if it is equal to the sum of cubes of its digits for example 0, 1, 153, 370, 371, 407 etc.
//ChecktempNumber is Armstrong or not using while loop
package com.guru99;
public class ArmstrongNumber {
public static void main(String[] args) {
int tempNumber, digit, digitCubeSum;
for (int inputArmstrongNumber = 0; inputArmstrongNumber < 1000; inputArmstrongNumber++) {
tempNumber = inputArmstrongNumber;
digitCubeSum = 0;
while (tempNumber != 0) {
/* On each iteration, remainder is powered by thetempNumber of digits n */
digit = tempNumber % 10;
//sum of cubes of each digits is equal to thetempNumber itself
digitCubeSum = digitCubeSum + digit * digit * digit;
tempNumber /= 10;
}
//check giventempNumber and digitCubeSum is equal to or not
if (digitCubeSum == inputArmstrongNumber)
System.out.println(inputArmstrongNumber + " is an Armstrong Number");
}
}
}
Output:
0 is an Armstrong Number
1 is an Armstrong Number
153 is an Armstrong Number
370 is an Armstrong Number
371 is an Armstrong Number
407 is an Armstrong Number
