1. Write a function called prepend().

Given a list and an element, prepend() returns a new list with the element added to the front of the list which was given as an argument.

output = prepend([1, 2], 3) print(output) # -> [3, 1, 2]

2.

Write a function called join_lists().

Given two lists, join_lists returns an list with the elements of "list1" in order, followed by the elements in "list2".

output = join_lists([1, 2], [3, 4]) print(output) # --> [1, 2, 3, 4]