How to create a Set of Sets in Ruby - Step by Step Examples

How to create a Set of Sets in Ruby ?

Answer

To create a Set of Sets in Ruby, you can use the `Set` class from the `set` library, which allows you to store unique elements, including other sets.


✐ Examples

1 Set of Sets with Integers

In this example,

  1. First, we need to require the `set` library using the `require 'set'` statement. This library provides the `Set` class.
  2. We then create a few individual sets. For example, we create a set named `set1` containing integers `1` and `2` by using `Set.new([1, 2])`.
  3. Similarly, we create another set named `set2` containing integers `3` and `4` by using `Set.new([3, 4])`.
  4. Next, we create the main set named `set_of_sets` that will contain the individual sets. We use `Set.new` again and pass an array of the sets we created earlier: `Set.new([set1, set2])`.
  5. This creates a set of sets where `set1` and `set2` are the elements of the `set_of_sets`.
  6. Finally, we print the `set_of_sets` using the `puts` statement to see the output.

Ruby Program

require 'set'

# Creating individual sets
set1 = Set.new([1, 2])
set2 = Set.new([3, 4])

# Creating a set of sets
set_of_sets = Set.new([set1, set2])

# Printing the set of sets
puts "Set of Sets: #{set_of_sets}"

Output

Set of Sets: #<Set: {#<Set: {1, 2}>, #<Set: {3, 4}>}>

2 Set of Sets with Strings

In this example,

  1. First, ensure the `set` library is included in your program by using the `require 'set'` statement.
  2. Create individual sets containing strings. For example, create a set named `set1` with strings `"apple"` and `"banana"` using `Set.new(['apple', 'banana'])`.
  3. Create another set named `set2` with strings `"carrot"` and `"date"` using `Set.new(['carrot', 'date'])`.
  4. Create the main set named `set_of_sets` to contain the individual sets. Use `Set.new` and pass an array of the sets: `Set.new([set1, set2])`.
  5. The resulting `set_of_sets` contains `set1` and `set2` as its elements.
  6. Print the `set_of_sets` using `puts` to display the contents.

Ruby Program

require 'set'

# Creating individual sets
set1 = Set.new(['apple', 'banana'])
set2 = Set.new(['carrot', 'date'])

# Creating a set of sets
set_of_sets = Set.new([set1, set2])

# Printing the set of sets
puts "Set of Sets: #{set_of_sets}"

Output

Set of Sets: #<Set: {#<Set: {"apple", "banana"}>, #<Set: {"carrot", "date"}>}>

3 Set of Sets with Mixed Data Types

In this example,

  1. First, include the `set` library by using the `require 'set'` statement to access the `Set` class.
  2. Create individual sets with mixed data types. For example, create a set named `set1` containing an integer `1` and a string `"apple"` using `Set.new([1, 'apple'])`.
  3. Create another set named `set2` containing a float `3.14` and a symbol `:banana` using `Set.new([3.14, :banana])`.
  4. Create the main set named `set_of_sets` to hold the individual sets. Use `Set.new` and pass an array of the sets: `Set.new([set1, set2])`.
  5. The `set_of_sets` will now contain `set1` and `set2` as its elements.
  6. Print the `set_of_sets` using the `puts` statement to see the output.

Ruby Program

require 'set'

# Creating individual sets
set1 = Set.new([1, 'apple'])
set2 = Set.new([3.14, :banana])

# Creating a set of sets
set_of_sets = Set.new([set1, set2])

# Printing the set of sets
puts "Set of Sets: #{set_of_sets}"

Output

Set of Sets: #<Set: {#<Set: {1, "apple"}>, #<Set: {3.14, :banana}>}>

Summary

In this tutorial, we learned How to create a Set of Sets in Ruby language with well detailed examples.


More Ruby Sets Tutorials

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  2. How to Get Length of a Set in Ruby ?
  3. How to create a Set of size N in Ruby ?
  4. How to create a Set of Numbers from 1 to N in Ruby ?
  5. How to create a Set of integers in Ruby ?
  6. How to create a Set of Strings in Ruby ?
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  9. How to Iterate Over a Set in Ruby ?
  10. How to check if a Set is Empty in Ruby ?
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  14. How to check if a Set contains all the items of Another Set in Ruby ?
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  16. How to Copy a Set in Ruby ?
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  18. How to find Union of Two Sets in Ruby ?
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  20. How to check if Two Sets are Equal in Ruby ?
  21. How to Convert a Set of Integers to a Set of Strings in Ruby ?
  22. How to Convert a Set of Strings to a Set of Integers in Ruby ?
  23. How to Convert a Set of Floats to a Set of Strings in Ruby ?
  24. How to Convert a Set of Strings to a Set of Floats in Ruby ?
  25. How to Filter Items of a Set based on a Condition in Ruby ?
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  28. How to create a Set of Sets in Ruby ?