题目：

题解：

class Solution:def __init__(self, nums: List[int]):self.nums = numsself.original = nums.copy()def reset(self) -> List[int]:self.nums = self.original.copy()return self.numsdef shuffle(self) -> List[int]:for i in range(len(self.nums)):j = random.randrange(i, len(self.nums))self.nums[i], self.nums[j] = self.nums[j], self.nums[i]return self.nums