• 2021-04-14
    用某种排序方法对线性表(25, 84, 21, 47, 15, 27, 68, 35, 20)进行排列时,元素序列的变化情况如下: (1) 25, 84, 21, 47, 15, 27, 68, 35, 20 (2) 20, 15, 21,25, 47, 27, 68, 35, 84 (3) 15, 20, 21, 25, 35, 27, 47, 68,84 (4) 15, 20, 21, 25, 27, 35, 47, 68, 84 则所有的排序方法是( )。