[February Week 2] Collate 2 Arrays into one

Write a function that collates 2 Arrays into one to create the output shown in the examples below:

Example 1

A = ["a", "b", "c", "d"]
B = [1, 2, 3]
output = ["a", "b", 1, "c", "d", 2, 3]

Example 2

A = ["a", "b", "c"]
B = [1, 2, 3, 4, 5]
output = ["a", "b", 1, "c", 2, 3, 4, 5]

Example 3

A = ["a", "b", "c", "d", "e"]
B = [1, 2]
output = ["a", "b", 1, "c", "d", 2, "e"]

the question is missing the context for the merge. Can one be provided?

What context is missing? I mean the examples show what the end result should look like. Or are you after the practical use of this?