Java – ArmStrong Number

Check the given 3 digit number is Armstrong Number or not :

• Sum of cubes of individual digits equals to the same number
• Example:        153 -> 1^3 + 5^3 + 3^3 = 153

import java.util.Scanner; class Code {             public static void main(String[] args) {                         Scanner scan = new Scanner(System.in);                         System.out.print(“Enter Num : “);                         int n = scan.nextInt();                         int temp, sum=0, r;                         temp=n;                         while(n>0){                                     r = n%10;                                     sum = sum + r*r*r;                                     n = n/10;                         }                         if(temp==sum)                                     System.out.println(“ArmStrong Number”);                         else                                     System.out.println(“Not an ArmStrong Number”);             } }

Program to check the given number is Armstrong number or not:

• Armstrong Number: Sum of its own digits raised to power number of digits
• Examples :     
  • 153 = 1^3 + 5^3 + 3^3 = 153
  • 1634 = 1^4 + 6^4 + 3^4 + 4^4 = 1634

import java.util.Scanner; class Code {             public static void main(String[] args) {                         int n, r, sum=0, temp, c=0, s, i;                         Scanner scan = new Scanner(System.in);                         System.out.print(“Enter Num : “);                         n = scan.nextInt();                         temp=n;                         while(n>0){                                     n=n/10;                                               c++;                         }                         n=temp;                         while(n>0){                                     r = n%10;                                     s=1;                                     for(i=1 ; i<=c ; i++){                                                 s = s*r;                                     }                                     sum = sum + s;                                     n = n/10;                         }                         if(temp==sum)                                     System.out.println(“ArmStrong Number”);                         else                                     System.out.println(“Not an ArmStrong Number”);             } }