Assingment 6

def print_in_order(integer_list):
    if len(integer_list) != 0:
        print (integer_list[0])
        return print_in_order(integer_list[1:])
    return ""

def print_reverse(integer_list):

    if len(integer_list) != 0:
        print (integer_list[-1])
        return print_reverse(integer_list[-len(integer_list)-1:-1])
    return ""

def is_palindrome_rec(input_string):
    if len(input_string) < 2:
        return True
    if input_string[0] != input_string[-1]:
        return False
    return is_palindrome_rec(input_string[1:-1])

def find_sum_digits(number):
  if number == 0:
    return 0
  else:
    return (number%10) + find_sum_digits(number//10)