shuffle_array
shuffle_array.py 源码
# 打乱数组
import random
from copy import copy
from typing import List
class Solution:
def __init__(self, nums: List[int]):
self.origin = copy(nums)
self.nums = nums
def reset(self) -> List[int]:
return self.origin
def shuffle(self) -> List[int]:
for i in range(len(self.nums)):
x = random.randint(0, len(self.nums) - 1)
self.nums[i], self.nums[x] = self.nums[x], self.nums[i]
return self.nums
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