int[] cocktailsort(int[] a, int size) {
    var swapped = true;
    var start = 0;
    var end = size - 1;

    while (swapped) {
        swapped = false;
        for (var i = start; i < end; i = i + 1;) {
            if (a[i] > a[i + 1]) {
                var temp = a[i];
                a[i] = a[i + 1];
                a[i + 1] = temp;
                swapped = true;
            }
        }

        if (swapped) {
          swapped = false;
          end = end - 1;
          for (var i = end - 1; i >= start; i = i - 1;) {
              if (a[i] > a[i + 1]) {
                  var temp = a[i + 1];
                  a[i + 1] = a[i];
                  a[i] = temp;
                  swapped = true;
              }
          }
          start = start + 1;
        }
    }
    return a;
}

int program(int argc, string[] argv) {
  var array = new int[]{13, 42, 32, 3, 2, 6};
  var result = cocktailsort(array, 6);
  return result[5];
}