Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- import Foundation
- public struct Queue<Element>
- {
- private var storage: [Element]
- public init()
- {
- self.storage = [Element]()
- }
- public mutating func enqueue(_ element: Element) -> Void
- {
- self.storage.append(element)
- }
- public mutating func dequeue() -> Element?
- {
- return self.storage.removeFirst()
- }
- public func whosFirst() -> Element?
- {
- return self.storage.first
- }
- }
- //
- // TEST
- //
- var queue = Queue<Int>()
- queue.enqueue(1)
- queue.enqueue(2)
- queue.enqueue(3)
- queue.enqueue(4)
- queue.enqueue(5)
- print(queue)
- if let first = queue.whosFirst()
- {
- print("First: \(first)")
- }
- print(queue)
- if let sacar = queue.dequeue()
- {
- print("Sacar: \(sacar)")
- }
- print(queue)
- queue.enqueue(1)
- print(queue)
Add Comment
Please, Sign In to add comment