容器的反向迭代器

    QStringList list;
    for(int i = 0;i < 26;++i)
    {
        char a = 'a';
        a+=i;
        list << QString(a);
    }

    QStringList tempList;
    for(auto it = list.begin();it != list.end();++it)
    {
        tempList << *it;
    }
    qDebug()<