(item)
| 22 | return this.arr.length-1 |
| 23 | } |
| 24 | push(item){ |
| 25 | // 新增元素 |
| 26 | this.arr.push(item) |
| 27 | this.shiftUp(this.arr.length-1) |
| 28 | } |
| 29 | shiftUp(k){ |
| 30 | let {arr,compare,parent} = this |
| 31 | while(k>1 && compare(arr[k],arr[parent(k)])){ |
no test coverage detected