leetcode怎么print-swift-Algorithm:快速/算法

leetcode怎么print swift-Algorithm 新增leetcode题解--swift版本哦 stack，用swift实现的 queue，用swift实现 高效的FIFOQueue 先设计一个Queue的协议 protocol Queue{ associatedtype Element mutating func enqueue(_ newElement: Element) mutating func dequeue() -> Element? } ///一个高效的FIFO队列，其元素类型为Element struct FIFOQueue<Element>:Queue{ private var left: [Element] = [] private var right: [Element] = [] mutating func enquene(_ newElement: Element){ right.append(newElement) } mutating func dequenue() -> Element?{ if left.isEmpty{ left = r