Day8-9

232. Implement Queue using Stacks/MyQueue.cs

@@ -0,0 +1,35 @@
+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;
+    }
+}