Interview Prep

var kthSmallest = function(root, k) {
  var potentialSmall = root.val;
  var counter = 0;
  var numbers = [root.val];
  var go = true;
  
  var test = function(x){
    if( !x.right || !x.left ){
        return numbers;
    } else {
    var nodes = [x.right, x.left];
      for( var i = 0; i < nodes.length; i ++){
        numbers.push(nodes[i].val);
        test(nodes[i]);
      }
    }
  }
  test(root);
  return numbers.sort()[k - 1]
  
};