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

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How to find Intersection of Two Sets in Swift ?

Answer

In Swift, 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 Swift'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.

Swift Program

let set1: Set<Int> = [1, 2, 3, 4]
let set2: Set<Int> = [3, 4, 5, 6]

let intersection = set1.intersection(set2)

print("Intersection of set1 and set2:")
intersection.forEach { print($0) }

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 Swift'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 filter method to filter elements from set1 that are present in set2.
The filtered elements are returned as the intersection of the two sets.

Swift Program

let set1: Set<Int> = [1, 2, 3, 4]
let set2: Set<Int> = [3, 4, 5, 6]

func findIntersection(set1: Set<Int>, set2: Set<Int>) -> Set<Int> {
    return Set(set1.filter { set2.contains($0) })
}

let intersection = findIntersection(set1: set1, set2: set2)

print("Intersection of set1 and set2:")
intersection.forEach { print($0) }

Output

Intersection of set1 and set2:
3
4

Summary

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

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

How to find Intersection of Two Sets in Swift ?

Answer

✐ Examples

1 Find Intersection of Two Sets using intersection method

Swift Program

Output

2 Find Intersection of Two Sets using custom implementation

Swift Program

Output

Summary

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