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How to Copy an Array in Ruby

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How to Copy an Array in Ruby ?

Answer

To copy an array in Ruby, you can use the clone method or the dup method.

✐ Examples

1 Copying an Array using clone Method

In this example,

We create an array named arr1 with elements.
We then use the clone method to create a copy of arr1 into arr2.
The clone method creates a shallow copy of the array.

Ruby Program

arr1 = [1, 2, 3, 4, 5]
arr2 = arr1.clone
puts "Array 1: #{arr1}"
puts "Array 2 (copy of Array 1): #{arr2}"

Output

Array 1: [1, 2, 3, 4, 5]
Array 2 (copy of Array 1): [1, 2, 3, 4, 5]

2 Copying an Array using dup Method

In this example,

We create an array named arr1 with elements.
We then use the dup method to create a copy of arr1 into arr2.
The dup method also creates a shallow copy of the array.

Ruby Program

arr1 = [1, 2, 3, 4, 5]
arr2 = arr1.dup
puts "Array 1: #{arr1}"
puts "Array 2 (copy of Array 1): #{arr2}"

Output

Array 1: [1, 2, 3, 4, 5]
Array 2 (copy of Array 1): [1, 2, 3, 4, 5]

Summary

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

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