Given the head of a singly linked list, group all the nodes with odd indices together followed by the nodes with even…

Given the head of a singly linked list, return true if it is a palindrome or false otherwise. Here’s the [Problem Link] to begin with. Example 1: Input:…

Given the head of a linked list, determine whether the list contains a loop. If a loop is present, return the…

Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null. Here’s the [Problem…

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…

The “Reverse Linked List” problem is one of the most fundamental and frequently asked problems in data structures. It tests your understanding of pointer manipulation and recursion in a singly…

The “Middle of the Linked List” problem is a classic linked list question that helps you understand traversal techniques and…

The “Design Linked List” problem is a fundamental data structure question that tests your understanding of how linked lists work and how to implement them from scratch. In this…

A singly linked list is a key data structure in computer science, often used for dynamic memory allocation and for…

The “Median of Two Sorted Arrays” problem is a classic and tricky coding interview question. It tests your understanding of…