Actually , sorting means either ascending order or descending order..... there is no rule that sorting means consider ascending order by default, but people is considering like that.
We all know that, Insertion sort takes Maximum no.of comparissions for worst case input.
1) if your insertion sort algorithm sorting the elements in ascending order.
Best Case possible on input Array :- 1,2,3,4,5,6,7 therefore ascending order
Worst Case possible on input Array :- 7,6,5,4,3,2,1 therefore descending order
Here you have only 1 and 0 ===> 1,1,1,1,1,0,0,0,0
2) if your insertion sort algorithm sorting the elements in descending order.
Best Case possible on input Array :- 7,6,5,4,3,2,1 therefore descending order
Worst Case possible on input Array :- 1,2,3,4,5,6,7 therefore ascending order
Here you have only 1 and 0 ===> 0,0,0,0,1,1,1,1,1