Question

Write a method for mutliply(a, b), where a and b are both positive
integers, but you can only use the + or - operators. Then write a program named Multiply.java to test
your method. Your program is going to accept two operands a and b from the Cmd Argument list.

Answer 1

"Multiply. Java public class Multiply{ public static Int multiply (Int a, Int b}{ Int result = 0: for(Int I = 0: i < a: i + + }{ result + = b: } return result: } Public static vold main(Strlng args[]) { Int a, b: If(args.length = = 2) { a = Integer.parselnt(args[O]): b = Integer.ParseInt (args([1]): Int result = multiply(a, b): System.out.printIn(""multiply("" + a + "", + b + "") = "" + result): } else{ System.out.printIn (""Please provide two commandline arguments for variables a and b""): } } } Command line arguments: 4 6 Output: multiply(4, 6) = 24 process finished with exit code 0 \r\n multiply(4, 6) = 24 process finished with exit code 0"

public class Multiply {
    public static int mutliply(int a, int b){
        int result = 0;
        for(int i = 0;i<a;i++){
            result += b;
        }
        return result;
    }

    public static void main(String args[]){
        int a,b;
        if(args.length == 2){
            a = Integer.parseInt(args[0]);
            b = Integer.parseInt(args[1]);
            int result = mutliply(a,b);
            System.out.println("multiply(" + a + ", " + b + ") = " + result);
        }
        else {
            System.out.println("Please provide two commandline arguments for variables a and b");
        }
    }
}