CODEWITHSUNDEEP
ruby
Jack Li
Jack Li

Reputation: 19

Sorting an array of array by a certain value in the inner array

I have the following array:

test = [["E","188","12314","87235"],["B","1803","12314","87235"],["C","1508","12314","87235"]]

I want to sort the whole array by the second value in the inner arrays (188,1803,1508). So this is what I want to have.

test = [["E","188","12314","87235"],["C","1508","12314","87235"],["B","1803","12314","87235"]]

What would be the most efficient way to achieve this? Do I need to write a sort to do it?

Upvotes: 1

Views: 66

Answers (2)

Cary Swoveland
Cary Swoveland

Reputation: 110675

Go with @Maxim's answer, but you could also write:

test.sort { |e,f| e[1].to_i <=> f[1].to_i }
  #=> [["E",  "188", "12314", "87235"],
  #    ["C", "1508", "12314", "87235"],
  #    ["B", "1803", "12314", "87235"]]

Upvotes: 1

Maxim Pontyushenko
Maxim Pontyushenko

Reputation: 3043

You can achieve it with sort_by:

test.sort_by { |e| e[1].to_i }

Upvotes: 3

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