while(temp!=null)
    {
        a[c] =  temp.val;
        c++;
        temp = temp.next;
    }
    
    k=c-1;
    
    for (int i=0; i<c/2; i++)
    {
        if(a[i]!=a[k])
        {
            flag = false;
            break;
        }
        k--;
    }
    
    return flag;
    
}