lol

Alternating Among Three Values
Suppose a variable x can have only three possible different values a, b and c, and you wish to assign to x the value other than its current one, and you wish your code to be independent of the values of a, b and c.

What is the most efficient way to cycle among three values? Write a function f so that it satisfies

  f(a) = b
  f(b) = c
  f(c) = a
EXAMPLE
  f(10, a=10, b=20, c=100) -> 20
  f(20, a=10, b=20, c=100) -> 100
  f(100, a=10, b=20, c=100) -> 10


  def f(x, a, b, c): 
    # your code goes below
    if x == a:
        return b
    elif x == b:
        return c
    else: 
        return a