ruby - Map array, iterate nested array -

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please refer following code:

x = 3 arr = ("a".."z").to_a arr2 = [1, 2, arr[ ], 4] arr3 = arr2.map * x

desired output:

arr3 # => 12a412b412c4

what best practice achieve output?

("a"..."z").first(3).map{|chr| [1, 2, chr, 4]}.join # => "12a412b412c4"

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