arrays - Ruby:在散列中分配数组值

Question

我想要以下哈希输出:

{ 0 => [0,1,2], 1 => [0,1,2], 2 => [0,1,2],
  3 => [3,4,5], 4 => [3,4,5], 5 => [3,4,5],
  6 => [6,7,8], 7 => [6,7,8], 8 => [6,7,8]
}

凭直觉我可以硬编码这些值，但我很难弄清楚如何动态地将每个散列键分配给适当的数组值。例如，也许创建一个 9.times 循环？

{ 0 => (0..2).to_a, 1 => (0..2).to_a, 2 => (0..2).to_a,
  3 => (3..5).to_a, 4 => (3..5).to_a, 5 => (3..5).to_a, 
  6 => (6..8).to_a, 7 => (6..8).to_a, 8 => (6..8).to_a 
}

感谢您的指导

Answer 1

动态上限:

count, split = 9, 3
0.upto(count - 1).map do |i|
  [i, [*(i / split * split)...(i / split) * split + split]]
end.to_h