Comparing pairwise, the largest number floats to the end in each round.
For example:
| 9 | 3 | 1 | 4 | 2 | 7 | 8 | 6 | 5 | Number of exchanges | |
|---|---|---|---|---|---|---|---|---|---|---|
| first round | 3 | 1 | 4 | 2 | 7 | 8 | 6 | 5 | 9 | 8 |
| second round | 1 | 3 | 2 | 4 | 7 | 6 | 5 | 8 | 9 | 4 |
| Third round | 1 | 2 | 3 | 4 | 6 | 5 | 7 | 8 | 9 | 3 |
| Fourth round | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 1 |