How to Remove Duplicates in an Array in Ruby

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How to Remove Duplicates in an Array in Ruby ?

Answer

To remove duplicates from an array in Ruby, you can use the `uniq` method or convert the array to a set.

✐ Examples

1 Remove Duplicates using uniq method

In this example,

We create an array named `numbers` with duplicate integers.
We call the `uniq` method on the array to remove duplicates.
Finally, we get an array without duplicates using the `uniq` method.

Ruby Program

numbers = [1, 2, 2, 3, 4, 4, 5]
unique_numbers = numbers.uniq
puts "Array without duplicates: #{unique_numbers}"

Output

Array without duplicates: [1, 2, 3, 4, 5]

2 Remove Duplicates using Set

In this example,

We create an array named `colors` with duplicate strings.
We convert the array to a Set to automatically remove duplicates.
Finally, we convert the Set back to an array to get an array without duplicates.

Ruby Program

require 'set'

colors = ["red", "green", "blue", "green", "yellow", "blue"]
unique_colors = colors.to_set.to_a
puts "Array without duplicates: #{unique_colors}"

Output

Array without duplicates: ["red", "green", "blue", "yellow"]

Summary

In this tutorial, we learned How to Remove Duplicates in an Array in Ruby language with well detailed examples.

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How to Remove Duplicates in an Array in Ruby

How to Remove Duplicates in an Array in Ruby ?

Answer

✐ Examples

1 Remove Duplicates using uniq method

Ruby Program

Output

2 Remove Duplicates using Set

Ruby Program

Output

Summary

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