James Pan

原题网址：https://leetcode.com/problems/delete-node-in-a-linked-list/Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linke

原题网址：https://leetcode.com/problems/lru-cache/Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set.get(key) - Get

原题网址：https://leetcode.com/problems/rotate-list/Given a list, rotate the list to the right by k places, where k is non-negative.For example:Given 1->2->3->4->5->NULL and k = 2,return 4-

原题网址：https://leetcode.com/problems/remove-duplicates-from-sorted-list/Given a sorted linked list, delete all duplicates such that each element appear only once.For example,Given 1->1->2, r

原题网址：https://leetcode.com/problems/partition-list/Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.You should pres

原题网址：https://leetcode.com/problems/reverse-linked-list-ii/Reverse a linked list from position m to n. Do it in-place and in one-pass.For example:Given 1->2->3->4->5->NULL, m = 2 and n = 4,

原题网址：https://leetcode.com/problems/plus-one-linked-list/Given a non-negative number represented as a singly linked list of digits, plus one to the number.The digits are stored such that the most

原题网址：https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.方法：使用慢指针

原题网址：https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original

原题网址：https://leetcode.com/problems/copy-list-with-random-pointer/A linked list is given such that each node contains an additional random pointer which could point to any node in the list or nul

原题网址：https://leetcode.com/problems/reverse-nodes-in-k-group/Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.If the number of nodes is not a m

原题网址：https://leetcode.com/problems/design-hit-counter/Design a hit counter which counts the number of hits received in the past 5 minutes.Each function accepts a timestamp parameter (in seco

原题网址：https://leetcode.com/problems/add-two-numbers-ii/You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each of their nodes contain

原题网址：https://leetcode.com/problems/swap-nodes-in-pairs/Given a linked list, swap every two adjacent nodes and return its head.For example,Given 1->2->3->4, you should return the list as 2-

原题网址：https://leetcode.com/problems/merge-two-sorted-lists/Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lis

原题网址：https://leetcode.com/problems/remove-nth-node-from-end-of-list/Given a linked list, remove the nth node from the end of list and return its head.For example, Given linked list: 1->2

原题网址：https://leetcode.com/problems/odd-even-linked-list/Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number

原题网址：https://leetcode.com/problems/add-two-numbers/You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a

原题网址：https://leetcode.com/problems/intersection-of-two-linked-lists/Write a program to find the node at which the intersection of two singly linked lists begins.For example, the following

原题网址：https://leetcode.com/problems/insertion-sort-list/Sort a linked list using insertion sort.方法：/** * Definition for singly-linked list. * public class ListNode { * int val; * Li

原题网址：https://leetcode.com/problems/reorder-list/Given a singly linked list L: L0→L1→…→Ln-1→Ln,reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→…You must do this in-place without altering the nodes' va

原题网址：https://leetcode.com/problems/linked-list-cycle-ii/Given a linked list, return the node where the cycle begins. If there is no cycle, return null.Note: Do not modify the linked list.

原题网址：https://leetcode.com/problems/linked-list-cycle/Given a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?方法：使用两个指针。/** * Defini

原题网址：https://leetcode.com/problems/remove-linked-list-elements/Remove all elements from a linked list of integers that have value val.ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, v

原题网址：https://leetcode.com/problems/reverse-linked-list/Reverse a singly linked list.click to show more hints.Hint:A linked list can be reversed either iteratively or recursively. Could

原题网址：https://leetcode.com/problems/sort-list/Sort a linked list in O(n log n) time using constant space complexity.方法一：分区排序，以第一个元素为参照，分为大中小。/** * Definition for singly-linked list. * publi

原题网址：https://leetcode.com/problems/moving-average-from-data-stream/Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window.For exampl

原题网址：https://leetcode.com/submissions/detail/58253344/Given a singly linked list, determine if it is a palindrome.Follow up:Could you do it in O(n) time and O(1) space?思路：普通的思路是可以生成一个反转的

原题网址：https://leetcode.com/problems/lfu-cache/Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: getand put.get(key) -