""" == Juggler Sequence == Juggler sequence start with any positive integer n. The next term is obtained as follows: If n term is even, the next term is floor value of square root of n . If n is odd, the next term is floor value of 3 time the square root of n. https://en.wikipedia.org/wiki/Juggler_sequence """ # Author : Akshay Dubey (https://github.com/itsAkshayDubey) import math def juggler_sequence(number: int) -> list[int]: """ >>> juggler_sequence(0) Traceback (most recent call last): ... ValueError: Input value of [number=0] must be a positive integer >>> juggler_sequence(1) [1] >>> juggler_sequence(2) [2, 1] >>> juggler_sequence(3) [3, 5, 11, 36, 6, 2, 1] >>> juggler_sequence(5) [5, 11, 36, 6, 2, 1] >>> juggler_sequence(10) [10, 3, 5, 11, 36, 6, 2, 1] >>> juggler_sequence(25) [25, 125, 1397, 52214, 228, 15, 58, 7, 18, 4, 2, 1] >>> juggler_sequence(6.0) Traceback (most recent call last): ... TypeError: Input value of [number=6.0] must be an integer >>> juggler_sequence(-1) Traceback (most recent call last): ... ValueError: Input value of [number=-1] must be a positive integer """ if not isinstance(number, int): raise TypeError(f"Input value of [number={number}] must be an integer") if number < 1: raise ValueError(f"Input value of [number={number}] must be a positive integer") sequence = [number] while number != 1: if number % 2 == 0: number = math.floor(math.sqrt(number)) else: number = math.floor( math.sqrt(number) * math.sqrt(number) * math.sqrt(number) ) sequence.append(number) return sequence if __name__ == "__main__": import doctest doctest.testmod()