ruby 将数组拆分为一些子数组
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Split an array into some sub-arrays
提问by Zag zag..
Possible Duplicate:
How to split (chunk) a Ruby array into parts of X elements?
I would like to split an array into an array of sub-arrays.
我想将一个数组拆分为一个子数组数组。
For example,
例如，
big_array = (0...6).to_a
How can we cut this big array into an array of arrays (of a max length of 2 items) such as:
我们如何将这个大数组切割成一个数组数组（最大长度为 2 个项目），例如：
arrays = big_array.split_please(2)
Where...
在哪里...
arrays # => [ [0, 1],
[2, 3],
[4, 5] ]
Note: I ask this question, 'cause in order to do it, I'm currently coding like this:
注意：我问这个问题，因为为了做到这一点，我目前正在这样编码：
arrays = [
big_array[0..1],
big_array[2..3],
big_array[4..5]
]
...which is so ugly. And very unmaintainable code, when big_array.length > 100.
……太丑了。并且非常难以维护的代码，当big_array.length > 100.
回答by Chris Ledet
You can use the #each_slicemethod on the array
您可以#each_slice在数组上使用该方法
big_array = (0..20).to_a
array = big_array.each_slice(2).to_a
puts array # [[0, 1], [2, 3], [4, 5], [6, 7], [8, 9], [10, 11], [12, 13], [14, 15], [16, 17], [18, 19], [20]]
