Remove duplicate elements from array in Ruby

ruby-on-rails arrays ruby duplicates
Mithun Sasidharan picture Mithun Sasidharan · Dec 3, 2011 · Viewed 222.5k times · Source

I have a Ruby array which contains duplicate elements.

array = [1,2,2,1,4,4,5,6,7,8,5,6]

How can I remove all the duplicate elements from this array while retaining all unique elements without using for-loops and iteration?

Answer

Mithun Sasidharan picture Mithun Sasidharan · Dec 3, 2011 
array = array.uniq

uniq removes all duplicate elements and retains all unique elements in the array.

This is one of many beauties of the Ruby language.

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