How to get all the possible Substrings of a String in Ruby

How to get all the possible Substrings of a String in Ruby ?

Answer

To get all possible substrings of a string in Ruby, you can use nested loops to iterate through each combination of start and end indices.

✐ Examples

1 All Substrings of 'Hello'

In this example,

We create a variable named str with a value of 'Hello'.
We initialize an array named substrings to store all substrings.
We use nested loops to iterate through each possible start and end index combination.
For each combination, we extract the substring using slice method and add it to the substrings array.
Finally, we print the substrings array.

Ruby Program

str = 'Hello'
substrings = []
(0...str.length).each do |i|
  (i + 1..str.length).each do |j|
    substrings << str[i...j]
  end
end
puts 'All substrings:', substrings

Output

All substrings:
H
He
Hel
Hell
Hello
e
el
ell
ello
l
ll
llo
l
lo
o

Summary

In this tutorial, we learned How to get all the possible Substrings of a String in Ruby language with well detailed examples.

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