How to get all the possible Substrings of a String in Dart - Step by Step Examples

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

Answer

To get all possible substrings of a string in Dart, 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 empty list 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 substring method and add it to the substrings list.
Finally, we print the substrings list.

Dart Program

void main() {
  String str = 'Hello';
  List<String> substrings = [];
  for (int i = 0; i < str.length; i++) {
    for (int j = i + 1; j <= str.length; j++) {
      substrings.add(str.substring(i, j));
    }
  }
  print('All substrings: \$substrings');
}

Output

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

Summary

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

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