Day8-9

232. Implement Queue using Stacks/232. Implement Queue using Stacks.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>_232._Implement_Queue_using_Stacks</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

232. Implement Queue using Stacks/MyQueue.cs

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+namespace _232._Implement_Queue_using_Stacks;
+
+public class MyQueue
+{
+    private Stack<int> _sInput = new Stack<int>();
+    private Stack<int> _sOutput = new Stack<int>();
+
+    public void Push(int x)
+    {
+        while(_sOutput.TryPop(out int res))
+            _sInput.Push(res);
+        _sInput.Push(x);
+    }
+
+    public int Pop()
+    {
+        while(_sInput.TryPop(out int res))
+            _sOutput.Push(res);
+        return _sOutput.Pop();
+    }
+
+    public int Peek()
+    {
+        while (_sInput.TryPop(out int res))
+            _sOutput.Push(res);
+        return _sOutput.Peek();
+    }
+
+    public bool Empty()
+    {
+        while (_sInput.TryPop(out int res))
+            _sOutput.Push(res);
+        return _sOutput.Count == 0;
+    }
+}

232. Implement Queue using Stacks/Program.cs

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+namespace _232._Implement_Queue_using_Stacks;
+
+internal class Program
+{
+    static void Main(string[] args)
+    {
+        Console.WriteLine("Hello, World!");
+    }
+}