How to find the Characters in the First String that are not Present in the Second String in Dart - Step by Step Examples

How to find the Characters in the First String that are not Present in the Second String in Dart ?

Answer

To find the characters in the first string that are not present in the second string in Dart, you can use sets and where method.

✐ Examples

1 Find Characters Not Present in Second String

In this example,

We create two string variables named str1 and str2 with different values.
We convert both strings to sets of characters using the Set class.
We filter the characters of str1 set that are not present in str2 set using the where method.
Finally, we join the filtered characters set to form the result string.

Dart Program

// Find Characters Not Present in Second String
void main() {
  String str1 = 'Hello World';
  String str2 = 'apple';
  Set<String> set1 = str1.split('').toSet();
  Set<String> set2 = str2.split('').toSet();
  var diff = set1.where((char) => !set2.contains(char)).join('');
  print('Characters not present in second string: $diff');
}

Output

Characters not present in second string: Ho Word

Summary

In this tutorial, we learned How to find the Characters in the First String that are not Present in the Second String in Dart language with well detailed examples.

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