如何获得正确的堆栈排序输出

import java.util.Stack;

public class StackSort {
    public static Stack<Integer> sortStack(Stack<Integer> inputStack) {
        Stack<Integer> auxStack = new Stack<>();

        while (!inputStack.isEmpty()) {
            int temp = inputStack.pop();

            while (!auxStack.isEmpty() && temp < auxStack.peek()) {
                inputStack.push(auxStack.pop());
            }

            auxStack.push(temp);
        }

        while (!auxStack.isEmpty()) {
            inputStack.push(auxStack.pop());
        }

        return inputStack;
    }

    public static void main(String[] args) {
        Stack<Integer> inputStack = new Stack<>();
        inputStack.push(5);
        inputStack.push(2);
        inputStack.push(8);
        inputStack.push(3);
        inputStack.push(1);

        Stack<Integer> sortedStack = sortStack(inputStack);

        System.out.println("Sorted Stack: " + sortedStack);
    }
}