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import java.io.*;import java.util.*;/* * To execute Java, please define "static void main" on a class * named Solution. * * If you need more classes, simply define them inline. */interface S

Linked List CycleGiven a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?Keep two kinds of pointers: faster pointe

LRU CacheDesign and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set.get(key) - Get the value (will always be

Copy List with Random PointerA 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 th