Merge Ruby arrays and concatenate elements in it

Question

I have two arrays

arr1 = ["a","b","c","d"]
arr2 = ["e","f","g","h"]

and I want to get a result like this

arr3 = ["ae","bf","cg","dh"]

How can I do that in ruby?

use this arr1.map.with_index { |e, i| e + arr2[i] } as it is faster and see same question here at http://stackoverflow.com/questions/22312536/merging-only-respective-elements-of-two-arrays-in-one-array-in-ruby — Alok Anand, Mar 26 '14 at 19:42

Arup Rakshit · Answer 1 · 2014-03-26T19:38:05.743

2

I'd do using #zip :

arr1 = ["a","b","c","d"] 
arr2 = ["e","f","g","h"]
arr1.zip(arr2).map(&:join)
# => ["ae", "bf", "cg", "dh"]

edited Mar 26 '14 at 19:38

answered Mar 26 '14 at 19:34

Arup Rakshit

1

I did the same... but you are always faster! :) – Rafa Paez Mar 26 '14 at 19:36
1

The use of `zip/join` seems like the obvious solution. Have no idea why it would be downvoted. – Cary Swoveland Mar 26 '14 at 20:27

1 Answers1