solution.getRandom();//return3 //getRandom() shouldreturneither 1, 2, or 3 randomly. Each element should have equal probability of returning. Constraints: The number of nodesinthe linked list will beinthe range [1, 10^4]. -10^4 <= Node.val <= 10^4 At most 10^4 calls will be ...
solution.getRandom(); 解法一:暴力解法 importjava.util.Random;publicclassSolution {privateListNode head;privateintsize; Random randGen=newRandom();/**@paramhead The linked list's head. Note that the head is guanranteed to be not null, so it contains at least one node.*/publicSolution(ListNo...
Given a singly linked list, return a random node's value from the linked list. Each node must have the same probability of being chosen. Follow up: What if the linked list is extremely large and its length is unknown to you? Could you solve this efficiently without using extra space? Ex...
实现题目要求的两个方法:初始化方法 和 返回随机节点的方法。 二. 思路 利用fastnode和slownode,fastnode的作用是边界判断;用random产生随机数,产生的随机数们 之和 达到了1,那么返回此时的slownode。 代码: class Solution { ListNode head; public Solution(ListNode head) { this.head = head; } public int ...
Given a singly linked list, return a random node's value from the linked list. Each node must have the same probability of being chosen. Follow up: What if the linked list is extremely large and its length is unknown to you? Could you solve this efficiently without using extra space?
Given a singly linked list, return a random node’s value from the linked list. Each node must have the same probability of being chosen. Follow up: What if the linked list is extremely large and its length is unknown to you? Could you solve this efficiently without using extra space?
LeetCode 382. Linked List Random Node 2019-12-11 09:45 −原题链接在这里:https://leetcode.com/problems/linked-list-random-node/ 题目: Given a singly linked list, return a random node's value from the linked list. Each... Dylan_Java_NYC ...
戈博折刀 0 2026 LeetCode 382. Linked List Random Node 2019-12-11 09:45 − 原题链接在这里:https://leetcode.com/problems/linked-list-random-node/ 题目: Given a singly linked list, return a random node's value from the linked list. Each... Dylan_Java_NYC 0 279 < 1 > 2004...
data) node = node.next nodes.append("None") return " -> ".join(nodes) Have a look at an example of using the above classes to quickly create a linked list with three nodes: Python >>> llist = LinkedList() >>> llist None >>> first_node = Node("a") >>> llist.head = ...
Alinkedlistisaself-referentialdatatypebecauseitcontainsapointerorlinktoanotherdataofthesametype.Linkedlistspermitinsertionandremovalofnodesatanypointinthelistinconstanttime,butdonotallowrandomaccess.Severaldifferenttypesoflinkedlistexist:singly-linkedlists,doublylinkedlists,andcircularly-linkedlists.链表是一种自我引用...