instead of result=int(n)*result you can write result *= int(n) More

Hello stranger, if condition: return True else: return False is same as: return condition and one more, str has [endswith](https://docs.python.org/2/library/stdtypes.html#str.endswith) More

or with generator: count_inversion = lambda nums: sum(1 for i in combinations(list(nums), 2) if i[0] > i[1]) More

Hello stranger, key=abs is sufficient. More