ruby - 两个 Ruby 数组中元素的每个组合

Question

我有三个 Ruby 数组:

color = ['blue', 'green', 'yellow']
names = ['jack', 'jill']
combination = []

我需要将以下连接插入到 combination 数组中:

FOR EACH names value: [name value] + " wants " + [color value]

所以结果将是:

combination = ['jack wants blue','jack wants green','jack wants yellow','jill wants blue','jill wants green','jill wants yellow']

我不知道该怎么做。我试过这个开始但无济于事:

name.each do |name| 
   puts "#{name} wants #{color}"
end

Answer 1

您可以使用 Array#product :

names = ['jack', 'jill']
colors = ['blue', 'green', 'yellow']

names.product(colors).map { |name, color| "#{name} wants #{color}" }
#=> ["jack wants blue", "jack wants green", "jack wants yellow", "jill wants blue", "jill wants green", "jill wants yellow"]