Question

How to multiply two numbers recursively without using multiplication, division, bitwise and loops in Node.js

Answer 1

function multiply(x, y) {
    if (y > 0)
        return (x + multiply(x, y - 1));
  
    if (y < 0)
        return -multiply(x, -y);
  
    return 0;
}

console.log("4 * 7 = " + multiply(4, 7));
console.log("3 * 0 = " + multiply(3, 0));
console.log("0 * 3 = " + multiply(0, 3));
console.log("3 * -5 = " + multiply(3, -5));
console.log("-3 * 6 = " + multiply(-3, 6));

 
 
 
/*
run:
 
4 * 7 = 28
3 * 0 = 0
0 * 3 = 0
3 * -5 = -15
-3 * 6 = -18
 
*/

 

70+ SQL courses for beginners and professionals