Coding Challenge Practice - Question 65

The task is to replicate the Math.pow() function, with the powers only integers.

The boilerplate code

function pow(base, power){
  // your code here
}

If the power is 0, return 1

if (power === 0) return 1

Multiply the base by the absolute value of the power, taking negative powers into consideration

let result = 1;
let absPower = Math.abs(power);

 for (let i = 0; i < absPower; i++) {
    result *= base;
  }

If the power is negative, return the reciporcal. Otherwise, return the result

return power > 0 ? result : 1 / result;

The final code

function pow(base, power){
  // your code here
  if(power === 0) return 1;

  let result = 1;
  let absPower = Math.abs(power);

  for(let i = 0; i < absPower; i++) {
    result *= base;
  }
  return power > 0 ? result : 1 / result;
}

That's all folks!