Test case details

Preparation Code

<script>   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;     }   }   Array.prototype.move3 = function(from, to) {     if (this.length > 100) {         return this.move2(from, to);     } else {         return this.move1(from, to);     }   }; </script>

Test cases

Test #1

array.move1(3, 88); array.move1(77, 43);

Test #2

array.move2(3, 88); array.move2(77, 43);

Test #3

array.move3(3, 88); array.move3(77, 43);