//创建列表类 function ArrayList() { this.array = [] ArrayList.prototype.insert = function (item) { this.array.push(item) } ArrayList.prototype.toString = function () { return this.array.join('-') } //交换两个数据的位置 ArrayList.prototype.swap = function (m, n) { var temp = this.array[m] this.array[m] = this.array[n] this.array[n] = temp } ArrayList.prototype.median = function (left, right) { //取出中间的位置 var center = Math.floor((left + right) / 2) //判断大小进行交换 if (this.array[left] > this.array[center]) { this.swap(left, center) } if (this.array[center] > this.array[right]) { this.swap(center, right) } if (this.array[left] > this.array[right]) { this.swap(left, right) } //将center换到right-1的位置 this.swap(center, right - 1) return this.array[right - 1] } ArrayList.prototype.quick = function () { this.quickSort(0, this.array.length - 1) } ArrayList.prototype.quickSort = function (left, right) { //借宿条件 if (left >= right) return //获取枢纽 var pivot = this.median(left, right) var i = left var j = right - 1 // 进行交换 while (true) { while (this.array[++i] < pivot) { } while (this.array[--j] > pivot) { } if (i < j) { this.swap(i, j) } else { break } } this.swap(i, right - 1) this.quickSort(left, i - 1) this.quickSort(i + 1, right) } } var list = new ArrayList() list.insert(1) list.insert(5) list.insert(2) list.insert(3) list.insert(4) list.quick() alert(list)