Question

Write a program factor that prints the prime factors of a specified non-negative integer. The integer will be provided as a command-line argument.

You may assume that the integer will be greater than 1 and less than or equal to the largest signed integer on your platform (that is, you may use an int).

Answer 1

class PrimeFactors {
   public static void main(String args[]) {
       int number = Integer.parseInt(args[0]);
       System.out.println("Given Number is : " + number);
       System.out.print("Prime Factors are : ");
       //iterating till the given number
       for (int i = 2; i <= number; i++) {
           while (number % i == 0) {
               System.out.print(i + " ");
               number = number / i;
           }
       }
       if (number < 1)
           System.out.println(number);
   }
}