from collections import deque # list: # array: # vector: # bit-{array,vector}: def sort(xs, highest): v = [0] * (highest + 1) result = deque() for x in xs: v[x] += 1 for i, x in enumerate(v): if x > 0: result.appendleft(i) return list(result) assert sort([37, 89, 41, 100, 65, 91, 53], 100) == [100, 91, 89, 65, 53, 41, 37] print("Tests pass!")