JAVA(2017)

Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note…

Given an array of strings, group anagrams together. For example, given: [“eat”, “tea”, “tan”, “ate”,…

Given a stream of integers and a window size, calculate the moving average of all integers in the sl…

Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. pu…

Implement the following operations of a stack using queues. push(x) — Push element x onto stac…

Implement the following operations of a queue using stacks. push(x) — Push element x to the ba…

Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using ext…

Write a program to find the node at which the intersection of two singly linked lists begins.  …

Given a singly linked list, determine if it is a palindrome. Follow up:Could you do it in O(n) time …

Reverse a singly linked list. 这道题非常基础，需要熟练掌握 /** * Definition for singly-linked list. * public class…

You are given two non-empty linked lists representing two non-negative integers. The digits are stor…

Merge two sorted linked lists and return it as a new list. The new list should be made by splicing t…

Write a function to delete a node (except the tail) in a singly linked list, given only access to th…

Given a linked list and a value x, partition it such that all nodes less than x come before nodes gr…

Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 –> …