Question

Write a public static method name productAll that takes in 2 arguments int a, int b, and returns the product of all values between those two numbers inclusive. Remember a can be less than b, b might be less than a, or they may be equal. They can also be positive or negative.

Example: productAll(2, 5); int returned by method: 120 Example: productAll(5, 2); int returned by method: 120 Example: productAll(3, 3); int returned by method: 9 Example: productAll(3, 5); int returned by method: 60 Example: productAll(-4, 3); int returned by method: 0 Example: productAll(-4, -2); int returned by method: -24 Example: productAll(-5, -2); int returned by method: 120 Example: productAll(-5, 2); int returned by method: 0 Example: productAll(-5, -3); int returned by method: -60. in java

Answer 1

//TestCode.java
import java.util.Arrays;
public class TestCode {
    public static int productAll(int a, int b){
        int temp;
        if(a>b){
            temp = a;
            a = b;
            b = temp;
        }
        int result = 1;
        for(int i = a;i<=b;i++){
            result = result * i;
        }
        return result;
    }

    public static void main(String[] args) {
        System.out.println(productAll(2,5));
        System.out.println(productAll(5,2));
    }
}

120
120