Method 1: Using a New Array for Comparison This approach iterates through the original array and checks each element against a new array. If the element is not found, it is added. const originalArray = ['x', 5, 5, 5, 7, 9, 9, 'y', 'z', 'x']; const uniqueArray = []; const length = originalArray.lengt...
Problem Description LeetCode Problem Link: 707. Design Linked List You can choose to use a singly linked list or a doubly linked list to design and implement your own linked list. A node in a singly linked list should have two attributes: val and next. val is the value of the current node, and next...
1. IntroductionA doubly linked list (DLL) is a type of linked list in which each node contains:Data — the value stored in the node.Prev (previous pointer) — a pointer/reference to the previous node.Next (next pointer) — a pointer/reference to the next node.Unlike a singly linked list, a doubly linke...