Multiply two numbers without using arithmetic operators in java
import java.util.Scanner;
public class MultiplyWithoutArithmeticOperators
{
static int multiplyNumber(int num1, int num2)
{
int output = 0;
boolean boolNegative = (num1 < 0 && num2 >= 0) || (num2 < 0 && num1 >= 0);
boolean boolPositive = !boolNegative;
num1 = Math.abs(num1);
for(int a = 0; a < num1; a++)
{
if(boolNegative && num2 > 0 || boolPositive && num2 < 0)
{
output -= num2;
}
else
{
output += num2;
}
}
return output;
}
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.print("Please enter first number: ");
int num1 = sc.nextInt();
System.out.print("Please enter second number: ");
int num2 = sc.nextInt();
System.out.println("Multiplication of two numbers: " + multiplyNumber(num1, num2));
sc.close();
}
}