Python Math: Reverse a range
Python Math: Exercise-71 with Solution
Write a Python program to reverse a range.
#https://gist.github.com/fcicq/ddb746042150b4e959e6 def reversed_range(start, stop=None, step=1): if stop is None: return range(start - step, -step, -step) else: new_start = stop - ((stop-start-1) % step + 1) new_end = new_start - (stop-start+step-1) // step * step if (stop - start) % step == 0 and step < 0: new_start -= step return range(new_start, new_end, -step) print(reversed_range(1, 10, 2)) print(reversed_range(1, 5, 1))
range(9, -1, -2) range(4, 0, -1)
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