How to iterate a particular item in array in ruby

Question

I want to do different iteration to elements in single array.

arr = ["1111", "2221", "7ext", "3345"]

I want to run a block that would slice only the element that contains letters and elements with no letter remain the same. The result would be following

arr = ["1111", "2221", "7", "e", "x", "t", "3345"]

I do not know neither how many elements would be in array or order. All elements are strings.

Your result is invalid.

sawa
– sawa

2015-08-22 11:02:38 +00:00
Commented Aug 22, 2015 at 11:02 — sawa
– sawa, Commented Aug 22, 2015 at 11:02

sawa · Accepted Answer · 2015-08-22 10:57:39Z

3

arr.flat_map{|s| s.split(/([a-z])/i)}.reject(&:empty?) # => ["1111", "2221", "7", "e", "x", "t", "3345"]

answered Aug 22, 2015 at 10:57

sawa

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Comments

Óscar López · Accepted Answer · 2015-08-22 13:11:49Z

3

Try this:

arr = ['1111', '2221', '7ext', '3345'] arr.flat_map { |e| e =~ /\D/ ? e.split('') : e } # => ["1111", "2221", "7", "e", "x", "t", "3345"]

edited Aug 22, 2015 at 13:11

answered Aug 22, 2015 at 5:26

Óscar López

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2 Comments

Cary Swoveland Over a year ago

You can eliminate flatten by using flat_map. Aside: one of my sons lives near Cali (Lake Calima).

Óscar López Over a year ago

@CarySwoveland thanks, great suggestion - and BTW: Cali is called "Heaven's outpost" for a good reason :) I'm glad for your son, cheers!

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