## Minimum difference puzzle in Ruby

Posted by rnaufal on August 28th, 2013

Folks, here we are for another puzzle from Javalobby:

Given two arrays, sorted and exactly the same length, write a function that finds a pair of numbers – one from each of the arrays – such that the difference between both is as small as possible.

Suppose our input arrays are `[1,2,3,4,5]`

and `[6,7,8,9,10]`

. Below is my solution in Ruby, it’s a one liner code :-):

[1,2,3,4,5].product([6,7,8,9,10]).map {|x, y| [x, y, (x-y).abs]}.sort { |a, b| a.last<=> b.last }.first.take(2)

The output is `[5, 6]`

.

Have another solution? Leave your comments here!