| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="UTF-8" /> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <title>ArrayList</title> |
| </head> |
| <body> |
| <script> |
| function ArrayList() { |
| |
| this.array = []; |
| |
| ArrayList.prototype.insert = function (item) { |
| this.array.push(item); |
| }; |
| |
| ArrayList.prototype.toString = function (item) { |
| return this.array.join("-"); |
| }; |
| 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) { |
| |
| var center=Math.floor((left+right)/2) |
| |
| 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) |
| } |
| |
| this.swap(center,right-1) |
| return this.array[right-1] |
| } |
| } |
| </script> |
| </body> |
| </html> |
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