I have this array:
a = [[1,2,3,4,5],[3,5,6,8,12,45],[3,2,1,5,7,9,10,11],[3,5,6,8,2,1,3,4,6]]
I want to merge its inner arrays so that they become:
a = [[1,2,3,4,5,3,5,6,8,12,45],[3,2,1,5,7,9,10,11,3,5,6,8,2,1,3,4,6]]
How can I do this?
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1 Answer
You need to do
a = [
[1, 2, 3, 4, 5],
[3, 5, 6, 8, 12, 45],
[3, 2, 1, 5, 7, 9, 10, 11],
[3, 5, 6, 8, 2, 1, 3, 4, 6]
]
a.each_slice(2).map(&:flatten)
# => [
# [1, 2, 3, 4, 5, 3, 5, 6, 8, 12, 45],
# [3, 2, 1, 5, 7, 9, 10, 11, 3, 5, 6, 8, 2, 1, 3, 4, 6]
# ]
Read the method each_slice(n)
Iterates the given block for each slice of
nelements. If no block is given, returns an enumerator.
