How to find Intersection of Two Sets in Dart - Step by Step Examples

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How to find Intersection of Two Sets in Dart ?

Answer

In Dart, you can find the intersection of two sets using the intersection method.

✐ Examples

1 Find Intersection of Two Sets using intersection method

In this example,

We define two sets, set1 and set2, using Dart's Set data structure.
We use the intersection method to find the common elements between set1 and set2.
The result is stored in a new set named intersection.
We print the elements of intersection to display the intersection of the two sets.

Dart Program

var set1 = {1, 2, 3, 4};
var set2 = {3, 4, 5, 6};

var intersection = set1.intersection(set2);

print('Intersection of set1 and set2:');
intersection.forEach((element) => print(element));

Output

Intersection of set1 and set2:
3
4

2 Find Intersection of Two Sets using custom implementation

In this example,

We create two sets, set1 and set2, using Dart's Set data structure and add elements to them.
We define a custom function named findIntersection that takes two sets as input parameters.
Inside the findIntersection function, we use the where method to filter elements from set1 that are present in set2.
The filtered elements are returned as the intersection of the two sets.

Dart Program

var set1 = {1, 2, 3, 4};
var set2 = {3, 4, 5, 6};

Set<int> findIntersection(Set<int> set1, Set<int> set2) {
  return set1.where((element) => set2.contains(element)).toSet();
}

var intersection = findIntersection(set1, set2);

print('Intersection of set1 and set2:');
intersection.forEach((element) => print(element));

Output

Intersection of set1 and set2:
3
4

Summary

In this tutorial, we learned How to find Intersection of Two Sets in Dart language with well detailed examples.

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