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

How to create a Set of Strings in Ruby ?

Answer

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


✐ Examples

1 Creating a Set of Fruit Names

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 `fruits` containing string elements `"apple"`, `"banana"`, `"cherry"`, `"date"`, and `"elderberry"` using `Set.new(["apple", "banana", "cherry", "date", "elderberry"])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array.
  4. Print the `fruits` 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 fruit names
fruits = Set.new(["apple", "banana", "cherry", "date", "elderberry"])

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

Output

Set of fruits: ["apple", "banana", "cherry", "date", "elderberry"]

2 Creating a Set of Color Names

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 `colors` containing string elements `"red"`, `"green"`, `"blue"`, `"yellow"`, and `"purple"` using `Set.new(["red", "green", "blue", "yellow", "purple"])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array.
  4. Print the `colors` 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 color names
colors = Set.new(["red", "green", "blue", "yellow", "purple"])

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

Output

Set of colors: ["red", "green", "blue", "yellow", "purple"]

3 Creating a Set of City Names

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 `cities` containing string elements `"New York"`, `"Los Angeles"`, `"Chicago"`, `"Houston"`, and `"Phoenix"` using `Set.new(["New York", "Los Angeles", "Chicago", "Houston", "Phoenix"])`.
  3. The `Set.new` method takes an array as an argument and creates a new set with the elements of the array.
  4. Print the `cities` 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 city names
cities = Set.new(["New York", "Los Angeles", "Chicago", "Houston", "Phoenix"])

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

Output

Set of cities: ["New York", "Los Angeles", "Chicago", "Houston", "Phoenix"]

Summary

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


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  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 ?
  26. How to Remove Specific Item from a Set in Ruby ?
  27. How to Remove Items from Set based on a Condition in Ruby ?
  28. How to create a Set of Sets in Ruby ?