1 Add commands to the program of Project 5 so that the user can delete the currently selected line, replace it with a new line, or insert a line at the current cursor position. The user should also be...

1 Add commands to the program of Project 5 so that the user can delete the currently selected line, replace it with a new line, or insert a line at the current cursor position. The user should also be able to save the current file.

2 Describe the strategy of quicksort and explain why it can reduce the time complexity of sorting from O(n2) to O(n log n).