in python
for i in range(100):
print(100 - i)
for i in range(100):
print(100 - i)
print [i for i in reversed(range(101))]You also missed the point of the exercise: start at 0 in your index, but count backward from 100 in output. So the map is 0->100, 1 -> 99, ..., 99 -> 1, 100 -> 0