Question 4 - A-Level Maths

A student is using a bubble sort to rearrange seven numbers into ascending order.
Her correct solution is as follows:
Initial list 18 17 13 26 10 14 24
After 1st pass 17 13 18 10 14 24 26
After 2nd pass 13 17 10 14 18 24 26
After 3rd pass 13 10 14 17 18 24 26
After 4th pass 10 13 14 17 18 24 26
After 5th pass 10 13 14 17 18 24 26
Write down the number of comparisons and swaps on each of the five passes.
Find the maximum number of comparisons and the maximum number of swaps that might be needed in a bubble sort to rearrange seven numbers into ascending order.