Append and Traverse a Doubly Linked List using Swift - iOS
Let's Code : OK, let's see the result first , Adding some random city names to linked list and printing the linked list : Let's create the node now : Node.swift import Foundation class Node: NSObject { var next: Node ? weak var previous: Node ? var value : String ? init (value : String ) { self . value = value } } Now implement linked list in another swift file DoublyLinkedList. swift import UIKit class DoublyLinkedList: NSObject { fileprivate var head : Node ? private var tail : Node ? override init () { super . init () } public var isEmpty : Bool { return head == nil } public var first : Node ? { ...