def binary_search(lst, item, start, end): if start == end: return start if lst[start] > item else start + 1 if start > end: return start mid = (start + end) // 2 if lst[mid] < item: return binary_search(lst, item, mid + 1, end) elif lst[mid] > item: return binary_search(lst, item, start, mid - 1) else: return mid def insertion_sort(lst): length = len(lst) for index in range(1, length): value = lst[index] pos = binary_search(lst, value, 0, index - 1) lst = lst[:pos] + [value] + lst[pos:index] + lst[index + 1 :] return lst def merge(left, right): if not left: return right if not right: return left if left[0] < right[0]: return [left[0]] + merge(left[1:], right) return [right[0]] + merge(left, right[1:]) def tim_sort(lst): """ >>> tim_sort("Python") ['P', 'h', 'n', 'o', 't', 'y'] >>> tim_sort((1.1, 1, 0, -1, -1.1)) [-1.1, -1, 0, 1, 1.1] >>> tim_sort(list(reversed(list(range(7))))) [0, 1, 2, 3, 4, 5, 6] >>> tim_sort([3, 2, 1]) == insertion_sort([3, 2, 1]) True >>> tim_sort([3, 2, 1]) == sorted([3, 2, 1]) True """ length = len(lst) runs, sorted_runs = [], [] new_run = [lst[0]] sorted_array = [] i = 1 while i < length: if lst[i] < lst[i - 1]: runs.append(new_run) new_run = [lst[i]] else: new_run.append(lst[i]) i += 1 runs.append(new_run) for run in runs: sorted_runs.append(insertion_sort(run)) for run in sorted_runs: sorted_array = merge(sorted_array, run) return sorted_array def main(): lst = [5, 9, 10, 3, -4, 5, 178, 92, 46, -18, 0, 7] sorted_lst = tim_sort(lst) print(sorted_lst) if __name__ == "__main__": main()