In this video, we are going to look at one of the famous interview questions on linked list: reversing a linkedlist in groups. Description: Given head, the head of a linked list, determine if the linked list has a cycle in it.
There is a cycle in a linked list if there is some node in the list that can be reached again by continuously following the next pointer. Internally, pos is used to denote the index of the node that tail's next pointer is connected to. Note that pos is not passed as a parameter.
Return true if there is a cycle in the linked list. Otherwise, return false Input: head = [3,2,0,-4], pos = 1
Explanation: There is a cycle in the linked list, where the tail connects to the 1st node (0-indexed).
Link:https://leetcode.com/problems/linked-list-cycle/ Each element in a linked list consists of two parts:
Data: This part stores the data value of the node. That is the information to be stored at the current node.
Next Pointer: This is the pointer variable or any other variable which stores the address of the next node in the memory. In this video, you’ll also learn about asymptotic notations, they are basically mathematical notations which represent order of growth of any mathematical function. There are three famous notations which you’ll see in this video, they are big O , Theta , Omega. Welcome to the first video Tutorial on Data Structures And Algorithms. In this video I am going to provide an Introduction to Data Structures And Algorithms. This Course is created to Explain the Fundamentals of data structures and algorithms. This video Will explain What is data?, What is data structure?, The Need for Data Structures, What is algorithm? #DataStructures #Algorithms #DSandAlgo #ProgrammingKnowledge ★★★Top Online Courses From ProgrammingKnowledge ★★★
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Detect Cycle in Linked List Using Floyd’s Cycle – FINDING ALGORITHM