将Ruby数组合并为多维数组

Question

将以下两个数组合并为多维数组的最佳方法是什么？

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

期望的结果:

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

Answer 1

您可以使用Array#product:

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

result = x.product(y)

puts result.inspect