To create an array in Ruby, you can use square brackets [] and separate the elements with commas. Here are some examples:
1. An array of integers:
array_of_numbers = [1, 2, 3, 4, 5]
2. An array of strings:
array_of_colors = ["red", "green", "blue"]
3. An array of mixed data types:
mixed_array = [1, "hello", 2.5, true]
4. An empty array:
empty_array = []
You can also create an array using the Array.new method, like this:
new_array = Array.new(3, "hello")
This will create an array with 3 elements, all with the value "hello". You can replace "hello" with any value you want.