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Commit 4b1700a

Browse files
feat: add swift implementation to lcci problem: No.03.04 (doocs#2642)
1 parent 2e7ed8a commit 4b1700a

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‎lcci/03.04.Implement Queue using Stacks/README.md‎

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@@ -299,6 +299,52 @@ impl MyQueue {
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*/
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```
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```swift
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class MyQueue {
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private var stk1: [Int] = []
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private var stk2: [Int] = []
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init() {}
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func push(_ x: Int) {
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stk1.append(x)
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}
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@discardableResult
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func pop() -> Int {
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move()
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return stk2.removeLast()
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}
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func peek() -> Int {
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move()
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return stk2.last!
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}
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func empty() -> Bool {
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return stk1.isEmpty && stk2.isEmpty
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}
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private func move() {
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if stk2.isEmpty {
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while !stk1.isEmpty {
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stk2.append(stk1.removeLast())
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}
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}
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}
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}
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/**
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* Your MyQueue object will be instantiated and called as such:
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* let obj = new MyQueue();
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* obj.push(x);
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* let param_2 = obj.pop();
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* let param_3 = obj.peek();
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* var myValue : Bool
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* myValue = obj.empty();
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*/
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```
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<!-- tabs:end -->
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<!-- end -->

‎lcci/03.04.Implement Queue using Stacks/README_EN.md‎

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@@ -330,6 +330,52 @@ impl MyQueue {
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*/
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```
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```swift
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class MyQueue {
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private var stk1: [Int] = []
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private var stk2: [Int] = []
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init() {}
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func push(_ x: Int) {
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stk1.append(x)
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}
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@discardableResult
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func pop() -> Int {
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move()
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return stk2.removeLast()
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}
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func peek() -> Int {
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move()
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return stk2.last!
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}
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func empty() -> Bool {
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return stk1.isEmpty && stk2.isEmpty
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}
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private func move() {
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if stk2.isEmpty {
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while !stk1.isEmpty {
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stk2.append(stk1.removeLast())
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}
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}
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}
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}
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/**
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* Your MyQueue object will be instantiated and called as such:
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* let obj = new MyQueue();
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* obj.push(x);
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* let param_2 = obj.pop();
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* let param_3 = obj.peek();
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* var myValue : Bool
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* myValue = obj.empty();
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*/
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```
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<!-- tabs:end -->
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<!-- end -->
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class MyQueue {
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private var stk1: [Int] = []
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private var stk2: [Int] = []
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init() {}
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func push(_ x: Int) {
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stk1.append(x)
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}
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@discardableResult
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func pop() -> Int {
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move()
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return stk2.removeLast()
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}
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func peek() -> Int {
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move()
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return stk2.last!
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}
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func empty() -> Bool {
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return stk1.isEmpty && stk2.isEmpty
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}
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private func move() {
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if stk2.isEmpty {
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while !stk1.isEmpty {
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stk2.append(stk1.removeLast())
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}
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}
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}
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}
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/**
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* Your MyQueue object will be instantiated and called as such:
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* let obj = new MyQueue();
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* obj.push(x);
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* let param_2 = obj.pop();
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* let param_3 = obj.peek();
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* var myValue : Bool
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* myValue = obj.empty();
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*/

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