Python 直接赋值.浅拷贝和深度拷贝区别 转自https://www.runoob.com/w3cnote/python-understanding-dict-copy-shallow-or-deep.html b = a: 赋值引用,a 和 b 都指向同一个对象. b = a.copy(): 浅拷贝, a 和 b 是一个独立的对象,但他们的子对象还是指向同一对象(是引用) a = {1: [1, 2, 4]} b = a.copy() print(a, b) # 输出: {1: [1, 2…
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy of the list. 深度复制: 仅简单的遍历一遍链表时,没法复制random pointer属性.所以有点懵,大神的做法如下,加入个人理解. 思路:对链表进行三次遍历. 第一次遍历复制每一个结…