Student Name:Class and Section:Total points are $25($each question is $5$ points$)$Question $1.$The bubble sort is O$($n$2).$ Like selection sort, bubble sort won$$t perform any swaps if the list isalready sorted. However, bubble sort$$s worst$-$case behavior for exchanges is greater than linear.The proof of this is left as an exercise for you. You can make a minor adjustment to the bubblesort to improve its best$-$case performance to linear. If no swaps occur during a pass through themain loop, then the list is sorted. This can happen on any pass, and in the best case will happenon the first pass. You can track the presence of swapping with a Boolean flag and return from thefunction when the inner loop does not set this flag. Write the modified bubble sort function.Create a list that contains $20$ values from $1$ to $20$ in random order and test your modified bubblesort function.Question $2$Explain the role that the number of data exchanges plays in the analysis of selection sort andbubble sort. What role, if any, does the size of the data objects play?Question $3.$Explain why the modified bubble sort still exhibits O$($ n$2)$ behavior on the average.Question $4$Explain why insertion sort works well on partially sorted lists.Question $5$Python$$s list method sort includes the keyword argument reverse, whose default value is False.The programmer can override this value to sort a list in descending order. Modify theselectionSort function discussed in this lecture so that it allows the programmer to supply thisadditional argument to redirect the sort