How to get the common elements of two Dart SplayTreeSet objects
The intersection method gets the common elements of two SplayTreeSet objects.
This method will find the elements present in both sets, create them as a new set, and return them.
Syntax
Set<E> intersection(Set<Object?> other);
Argument
This method takes a Set object as an argument.
Return value
A new Set containing common elements between two Set objects is returned.
Example
The code below shows how to get the common elements of two SplayTreeSet objects:
import 'dart:collection';
void main() {
//create a new SplayTreeSet which can have int type elements
SplayTreeSet set1 = new SplayTreeSet<int>((a,b) => b.compareTo(a));
// add three elements to the set1
set1.add(5);
set1.add(4);
set1.add(3);
print('The set1 is $set1');
//create a new SplayTreeSet which can have int type elements
SplayTreeSet set2 = new SplayTreeSet<int>((a,b) => b.compareTo(a));
// add three elements to the set
set2.add(5);
set2.add(6);
set2.add(3);
print('The set2 is $set2');
// the common elements on set1 and set2 is
Set<int> commonElements = set1.intersection(set2);
print('The common elements is $commonElements');
}Explanation
-
Line 1: We import the
collectionlibrary. -
Line 4: We create a new
SplayTreeSetobject namedset1. We pass acomparefunction as an argument. This function maintains the order of thesetelements. In our case, ourcomparefunction will order elements in descending order. -
Lines 7-9: We add three new elements to the
set1. Now the set is{5,4,3}. -
Line 13: We create a new
SplayTreeSetobject namedset2. -
Lines 16-18: We add three new elements to the
set2. Now the set is{6,5,3}. -
Line 23: We use the
intersectionmethod to get the common elements betweenset1andset2. In our case, the common elements between the two sets are5and3. Hence, a new set containing elements 5 and 3 will be returned ({5,3}).
RELATED TAGS
CONTRIBUTOR
View all Courses
