CODEWITHSUNDEEP
ruby
Karen
Karen

Reputation: 195

how to get last few numbers of an element in an array?

array = [13845, 23424, 89021, 83628]

How would I return the last 2 numbers of each element?

expected output: 45 24 21 28

I have tried array[i].to_s.last(2) but I received the error message: "undefined method `last' for "13845":String"

Upvotes: 3

Views: 86

Answers (2)

pjd
pjd

Reputation: 1173

array.map { |i| i.to_s[-2..-1] } will do it in non-Rails Ruby, but CherryDT's handling of the elements as numbers is cleaner.

EDIT: It looks like CherryDT's answer has been removed, but Armin Primadi does the same thing, and that is the better answer. I only offer this because of your attempt to use .to_s.

Upvotes: 2

Armin Primadi
Armin Primadi

Reputation: 774

Just use array.map in Ruby. String::last isn't standard Ruby and part of Rails ActiveSupport.

array.map { |e| e % 100 }

Upvotes: 6

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