232. 用栈实现队列 Implement Queue using Stacks

public class MyQueue {
    public Stack<int> stack;

    public MyQueue() {
        stack = new Stack<int>();
    }

    public void Push(int x) {
        stack.Push(x);
    }

    public int Pop() {
        Stack<int> tempStack = new Stack<int>();
        int count = stack.Count();
        for (int i = 0; i < count; i++) {
            tempStack.Push(stack.Pop());
        }
        int peek = tempStack.Pop();
        stack.Clear();
        count = tempStack.Count();
        for (int i = 0; i < count; i++) {
            stack.Push(tempStack.Pop());
        }
        return peek;
    }

    public int Peek() {
        int[] arr = stack.ToArray();
        return arr[stack.Count - 1];
    }

    public bool Empty() {
        return this.stack.Count == 0;
    }
}