Thread: How do I calculate power using for loop?

Hello I need some help.

How do I use for loop in order to calculate the power of a number?

In here, I used Math.pow and I need to change it and use for loop instead.

import java.util.Scanner;
 
public class LoopActivity
{
    public static void main(String[] args) {
 
        /*------------------------------------------*/
        Scanner scanner = new Scanner(System.in);
        int loopRange = 0, sumOdd = 0, sumEven = 0, n1 = 1, n2 = 2, x1 = 1;
        /*------------------------------------------*/
 
 
        //if loopRange is less than 0 the loop doesn't work.
        do {
            System.out.print("Please enter loop range: ");
            loopRange = scanner.nextInt();
            if(loopRange < 0) {
                System.out.println("\nError: Invalid loop range.\n\tPlease enter a number equal or grater than 0.\n");
            }
        } while(loopRange < 0);
 
 
 
        for(int x2 = loopRange/2 ; n1 <= loopRange ; x2--, x1++) {
            //odd
            int ans1 = (int) Math.pow(n1, x1);
            System.out.println(n1 + "^" + x1 + "=" + ans1);
            sumOdd += ans1;
            n1 += 2;
 
 
            //even
            if(n2 <= loopRange) {
                int ans2 = (int) Math.pow(n2, x2);
                System.out.println(n2 + "^" + x2 + "=" + ans2);
                sumEven += ans2;
                n2 += 2;
            }
        }
 
 
        System.out.println("The sum of ODD increasing power is: " + sumOdd);
        System.out.println("The sum of EVEN decreasing power is: " + sumEven);
    }
}