leetcode之Shuffle an Array

这题有了random模块的shuffle函数是非常简单的。只不过shuffle是直接改变list，需要先用一个中间的list进行替换，否则就改动了init里面的list。

import random class Solution(object): def __init__(self, nums): """ :type nums: List[int] :type size: int """ self.list1 = nums def reset(self): """ Resets the array to its original configuration and return it. :rtype: List[int] """ return self.list1 def shuffle(self): """ Returns a random shuffling of the array. :rtype: List[int] """ list2 = self.list1[::] random.shuffle(list2) return list2