Power

Power of a number.

function power(x,n)
{
  //Logic
  if(n === 0)
  {
    return 1;
  }
  if(n % 2 === 0)
  {
    return power(x * x, n / 2);
  }
  else
  {
    return x * power(x * x, n / 2);
  }
}