How do I implement a linked list in Swift?

A linked list is a data structure that consists of a sequence of elements, each linked to the next by references. In Swift, implementing a linked list allows you to create a dynamic data structure that can grow or shrink in size as needed.

Implementing a Linked List in Swift

The following is an example of how to implement a simple singly linked list in Swift.


        class Node {
            var value: Int
            var next: Node?

            init(value: Int) {
                self.value = value
                self.next = nil
            }
        }

        class LinkedList {
            var head: Node?

            func append(value: Int) {
                let newNode = Node(value: value)
                if head == nil {
                    head = newNode
                } else {
                    var currentNode = head
                    while currentNode?.next != nil {
                        currentNode = currentNode?.next
                    }
                    currentNode?.next = newNode
                }
            }

            func display() {
                var currentNode = head
                while currentNode != nil {
                    print(currentNode!.value)
                    currentNode = currentNode?.next
                }
            }
        }

        let list = LinkedList()
        list.append(value: 1)
        list.append(value: 2)
        list.append(value: 3)
        list.display() // Output: 1 2 3

How do I implement a linked list in Swift?

Implementing a Linked List in Swift

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How do I implement a linked list in Swift?

Implementing a Linked List in Swift

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