Bubble and shell sort. done on C programming introduction course. The program is in estonian.First you enter the number of elements, then if u dont want the program to autogenerate your numbers for sorting press Y and enter them manually. next choose B for bubble sort and S for shell sort. Easy-Bubble and shell sort. done on C programming introduction course. The program is in estonian.First you enter the number of elements, then if u dont want the program to autogenerate your numbers for sorting press Y and enter them manually. next choose B for bubble sort and S for shell sort. Easy..