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Learn and practice manipulating arrays of values in Ruby

What is an array

In Ruby, an array is a collection of values stored as a single variable. For example, ["apple","mango","banana"] is an array of strings. It is stored as a variable just like any other data type.

The following program demonstrates how to create an array of string values:

Ruby
arrayOfFruits = ["apple","mango","banana"] # Creating an array of strings
print(arrayOfFruits,"\n")

In the code above:

  • We use a variable, arrayOfFruits, to assign the comma-separated values enclosed in square brackets.
  • We call the arrayOfFruits variable an array.

The following program demonstrates the various types of arrays in Ruby:

Ruby
array0 = []
print("Empty array: ")
print(array0)
 
array1 = [100]
print("\nSingle-valued array: ")
print(array1)
 
array2 = [7, 7, 4, 4, 3, 3, 3, 6, 5]
print("\nArray having duplicate Numbers: ")
print(array2)
 
array3 = [50, 'Learn', 10, 'To', 2.5, -1, 'Code']
print("\nArray with the use of mixed values: ")
print(array3)

Hint: We use \n with the print statements to display an extra line.

There are a few new things we have to understand in the code above.

  • The array0, array1, array2, array3, array4, and array5 variables store array values.

  • An array that has no values is an empty or a blank array (array0).

  • An array can have only one value (array1).

  • The variable array2 holds an array of integers. The array may have duplicate values.

  • The variable array3 holds an array ...