package com.tsubasa.collection;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collection;

import java.util.Iterator;

public class ReversibleArrayList<T> extends ArrayList<T>{

    public ReversibleArrayList(Collection<T> c){

        super(c) ;

    }

    public Iterable<T> reversed(){

        return new Iterable<T>(){

            @Override

            public Iterator<T> iterator() {

                return new Iterator<T>(){

                    int current = size() -1 ;

                    @Override

                    public boolean hasNext() {

                       return current > -1 ;

                    }

                    @Override

                    public T next() {

                        return get(current--);

                    }

                    @Override

                    public void remove() {

                        throw new UnsupportedOperationException() ;

                    }

                } ;

            }

        } ;

    }

    public static void main(String[] args) {

        ReversibleArrayList<String> list =

                new ReversibleArrayList<String>(

                        Arrays.asList("to be or not to be it is a question".split(" "))) ;

        for(String str : list){

            System.out.print(str + " ");

        }

        System.out.println();

        for(String str :list.reversed()){

            System.out.print(str + " ");

        }

    }

}