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

How to create a Set of integers in Ruby ?

Answer

To create a set of integers in Ruby, you can use the `Set` class from the `set` library.


✐ Examples

1 Creating a Set of Consecutive Integers

In this example,

  1. First, include the `set` library in your program by using the `require 'set'` statement to access the `Set` class.
  2. Create a set named `numbers` containing integer elements `1`, `2`, `3`, `4`, and `5` using `Set.new([1, 2, 3, 4, 5])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array. Here, we provide an array of consecutive integers from `1` to `5`.
  4. Print the `numbers` set using the `puts` statement to display its contents. Convert the set to an array using the `to_a` method for a formatted output.

Ruby Program

require 'set'

# Creating a set with consecutive integers
numbers = Set.new([1, 2, 3, 4, 5])

# Printing the set
puts "Set of numbers: #{numbers.to_a}"

Output

Set of numbers: [1, 2, 3, 4, 5]

2 Creating a Set of Prime Numbers

In this example,

  1. First, make sure to require the `set` library using the `require 'set'` statement to access the `Set` class.
  2. Create a set named `primes` containing integer elements `2`, `3`, `5`, `7`, and `11` using `Set.new([2, 3, 5, 7, 11])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array. Here, we provide an array of the first few prime numbers.
  4. Print the `primes` set using the `puts` statement to display its contents. Convert the set to an array using the `to_a` method for a formatted output.

Ruby Program

require 'set'

# Creating a set with prime numbers
primes = Set.new([2, 3, 5, 7, 11])

# Printing the set
puts "Set of prime numbers: #{primes.to_a}"

Output

Set of prime numbers: [2, 3, 5, 7, 11]

3 Creating a Set of Even Numbers

In this example,

  1. First, include the `set` library in your program by using the `require 'set'` statement to access the `Set` class.
  2. Create a set named `evens` containing integer elements `2`, `4`, `6`, `8`, and `10` using `Set.new([2, 4, 6, 8, 10])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array. Here, we provide an array of even numbers.
  4. Print the `evens` set using the `puts` statement to display its contents. Convert the set to an array using the `to_a` method for a formatted output.

Ruby Program

require 'set'

# Creating a set with even numbers

# Creating a set with even numbers
evens = Set.new([2, 4, 6, 8, 10])

# Printing the set
puts "Set of even numbers: #{evens.to_a}"

Output

Set of even numbers: [2, 4, 6, 8, 10]

Summary

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


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