How to Sort Characters in String in Dart - Step by Step Examples



How to Sort Characters in String in Dart ?

Answer

In Dart, you can sort characters in a string by converting the string to a list of characters, sorting the list, and then joining it back into a string.



✐ Examples

1 Sort Characters in Ascending Order

In this example,

  1. We create a string named str.
  2. We convert the string to a list of characters using split('') method.
  3. We sort the list of characters in ascending order using sort() method.
  4. We join the sorted list of characters back into a string using join('') method.
  5. Finally, we print the sorted string in ascending order.

Dart Program

void main() {
  String str = 'hello world';
  List<String> chars = str.split('');
  chars.sort();
  String sortedStr = chars.join('');
  print('Sorted string in ascending order: \$sortedStr');
}

Output

Sorted string in ascending order:  dehllloorw

2 Sort Characters in Descending Order

In this example,

  1. We create a string named str.
  2. We convert the string to a list of characters using split('') method.
  3. We sort the list of characters in descending order using sort() method with a custom comparator.
  4. We join the sorted list of characters back into a string using join('') method.
  5. Finally, we print the sorted string in descending order.

Dart Program

void main() {
  String str = 'hello world';
  List<String> chars = str.split('');
  chars.sort((a, b) => b.compareTo(a));
  String sortedStr = chars.join('');
  print('Sorted string in descending order: \$sortedStr');
}

Output

Sorted string in descending order: wroolllhed

Summary

In this tutorial, we learned How to Sort Characters in String in Dart language with well detailed examples.




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