Eloquent recursion even

by Rich Costello

JavaScript

function isEven(n) {
   if (n == 0)
       return true;
    else if (n == 1)
        return false;
    else if (n < 0)
        return isEven(-n);
    else
        return isEven(n - 2);
}

console.log(isEven(69));