java - 堆栈到 --> ArrayList Java

Question

我做了一个 Stack 和一个 ArrayList 来研究一下。实际上我现在想用 ArrayList 替换我的 Stack，但是如何将 Stack 转换为 ArrayList？ push, pop ... 怎么样了？

谢谢

public static ArrayList<State> search(State finalstate)
{
    ArrayList<State> toreturn = new ArrayList<State>();
    Stack<State>mystack=new Stack<State>();
    mystack.push(initState);
    State currState;
    currState=initState;
    while(!mystack.isEmpty() && !currState.equals(finalstate) )
    {
        currState=mystack.pop();
        toreturn.add(currState);
        if(currState.vecinos.containsKey("up"))
        {
            mystack.push(currState).vecinos.get("up");
        }
        if(currState.vecinos.containsKey("down"))
        {
            mystack.push(currState).vecinos.get("down");
        }
        if(currState.vecinos.containsKey("left"))
        {
            mystack.push(currState).vecinos.get("left");
        }
        if(currState.vecinos.containsKey("right"))
        {
            mystack.push(currState).vecinos.get("right");
        }
    }

    return toreturn;
}

Answer 1

Stack是一个Collection，可以使用ArrayList(Collection)构造函数

list = new ArrayList(stack);