Unlocking the Power of Disjoint Sets

Determining Disjoint Sets

When working with sets, it’s essential to understand the concept of disjoint sets. In simple terms, two sets are considered disjoint if they have no elements in common.

The isDisjoint() Method

The isDisjoint() method is a part of the Set class, and its syntax is straightforward:

set.isDisjoint(otherSet)

Here, set is an object of the Set class, and otherSet is the set of elements you want to compare.

Understanding the Parameters

The isDisjoint() method takes a single parameter: otherSet. This is the set of elements you want to check for disjointness with the original set.

Return Value

The isDisjoint() method returns a boolean value indicating whether the two sets are disjoint or not. If the sets are disjoint, it returns true; otherwise, it returns false.

Putting it into Practice

Let’s see an example in Swift:

let A: Set = [1, 2, 3]
let B: Set = [4, 5, 6]
let C: Set = [4, 7, 8]

print(A.isDisjoint(with: B)) // Output: true
print(A.isDisjoint(with: C)) // Output: false

In this example, we have three sets: A, B, and C. We use the isDisjoint() method to check if A is disjoint with B and C. Since A and B have unique elements, the method returns true. However, since A and C both contain the element 4, the method returns false.