Return First and Last Parameter

Published by Helen Yu in
language_fundamentals

Write two functions:

  1. first_arg() should return the first parameter passed in.
  2. last_arg() should return the last parameter passed in.

Examples

first_arg(1, 2, 3) ➞ 1

last_arg(1, 2, 3) ➞ 3

first_arg(8) ➞ 8

last_arg(8) ➞ 8

Notes

  • Return None if the function takes no parameters.
  • If the function only takes in one parameter, the first_arg and last_arg functions should return the same value.
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