题目标签:Linked List 题目给了我们一组 linked list, 和一组 G, 让我们找到 G 在 linked list 里有多少组相连的部分. 把G 存入 hashset,遍历 linked list, 利用 hashset 来检查目前的点 和 下一个点 是否在G 里面. 如果目前的点在G里面,下一个点不在,说明这里断开了.具体看code. Java Solution: Runtime:  7 ms, faster than 81 % Memory Usage: 40 MB, l…

We are given head, the head node of a linked list containing unique integer values. We are also given the list G, a subset of the values in the linked list. Return the number of connected components in G, where two values are connected if they appear…

We are given head, the head node of a linked list containing unique integer values. We are also given the list G, a subset of the values in the linked list. Return the number of connected components in G, where two values are connected if they appear…

https://leetcode.com/problems/linked-list-components/ We are given head, the head node of a linked list containing unique integer values. We are also given the list G, a subset of the values in the linked list. Return the number of connected componen…

Question 817. Linked List Components Solution 题目大意:给一个链表和该链表元素组成的一个子数组,求子数组在链表中组成多少个片段,每个片段中可有多个连续的元素 思路:构造一个set用来存储子数组元素用于判断是否存在,遍历链表,如果当前元素不存在而下一个元素存在就表示一个片段的开始了,遍历前先判断首元素是否存在 Java实现: public int numComponents(ListNode head, int[] G) { Set<Integer>…

Design your implementation of the linked list. You can choose to use the singly linked list or the doubly linked list. A node in a singly linked list should have two attributes: val and next. val is the value of the current node, and next is a pointe…

Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using extra space? 给定一个链表,判断是否有环存在.Follow up: 不使用额外空间. 解法:双指针,一个慢指针每次走1步,一个快指针每次走2步的,如果有环的话,两个指针肯定会相遇. Java: public class Solution { public boolean hasCycle(Li…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/linked-list-components/description/ 题目描述 We are given head, the head node of a linked list containing unique integer values. We are also g…

1. 原始题目 We are given head, the head node of a linked list containing unique integer values. We are also given the list G, a subset of the values in the linked list. Return the number of connected components in G, where two values are connected if the…

Reverse a singly linked list. click to show more hints. Hint: A linked list can be reversed either iteratively or recursively. Could you implement both? 之前做到Reverse Linked List II 倒置链表之二的时候我还纳闷怎么只有二没有一呢,原来真是忘了啊,现在才加上,这道题跟之前那道比起来简单不少,题目为了增加些许难度,让我们分别用…