How to define a function is_member() that takes a value (i.e. a number, string, etc) x and a list of values a, and returns True if x is a member of a, False otherwise. (Note that this is exactly what the in operator does, but for the sake of the exercise I should pretend Python did not have this operator.
This is what I've come up with, but it doesn't work!
def is_member(x, a):
return x == a[::]
Recursive solution:
def is_member(value, array):
if len(array) == 0:
return False
return value == array[0] or is_member(value, array[1:])