add element to ruby array return new array
Solution 1:
You can easily add two arrays in Ruby with plus operator. So, just make an array out of your element.
arr = [1, 2]
puts arr + [3]
# => [1, 2, 3]
puts arr
# => [1, 2]
Solution 2:
it also works by extending arr using * operator
arr = [1,2]
puts [*arr, 3]
=> [1, 2, 3]