//re-write this factorial function using a loop instead of recursion.

function fact(num) {

  if (num === 1) 

    return 1;

  else 

    return num * fact(--num);

}

​

console.log(`4! = ${fact(4)}`); //should be 24

​

//re-write this exponent function using recursion

//should return a^b - a to the power of b

function exp(a,b) {

  let result = 1;

  for (let i=0; i<b; i++) {

    result *= a;

  }

  return result;

}

console.log(`2^8 = ${exp(2,8)}`) //should be 256