var array = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
  22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
  41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
  60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78,
  79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97,
  98, 99,
];

Array.prototype.move1 = function (from, to) {
  this.splice(to, 0, this.splice(from, 1)[0]);
};

Array.prototype.move2 = function (pos1, pos2) {
  // local variables
  var i, tmp;
  // cast input parameters to integers
  pos1 = parseInt(pos1, 10);
  pos2 = parseInt(pos2, 10);
  // if positions are different and inside array
  if (
    pos1 !== pos2 &&
    0 <= pos1 &&
    pos1 <= this.length &&
    0 <= pos2 &&
    pos2 <= this.length
  ) {
    // save element from position 1
    tmp = this[pos1];
    // move element down and shift other elements up
    if (pos1 < pos2) {
      for (i = pos1; i < pos2; i++) {
        this[i] = this[i + 1];
      }
    }
    // move element up and shift other elements down
    else {
      for (i = pos1; i > pos2; i--) {
        this[i] = this[i - 1];
      }
    }
    // put element from position 1 to destination
    this[pos2] = tmp;
  }
};