Merge Ruby Arrays into Multidimensional Array

Question

What is the best way to merge the following two arrays into a multidimensional array?

x = ['A', 'B', 'C']
y = ['D', 'E', 'F']

Desired result:

z = [['A', 'D'], ['A', 'E'], ['A', 'F'], ['B', 'D'], ['B', 'E'], ['B', 'F'], ['C', 'D'], ['C', 'E'], ['C', 'F']]

Answer 1

You can use Array#product:

x = ['A', 'B', 'C']
y = ['D', 'E', 'F']

result = x.product(y)

puts result.inspect