How to check if a Set contains all the items of Another Set in Swift

How to check if a Set contains all the items of Another Set in Swift ?

Answer

To check if a set contains all the items of another set in Swift, you can use the isSuperset method of the Set class.


✐ Examples

1 Check if One Set of Integers is a Superset of Another Set

In this example,

  1. We create two sets named setA and setB and initialize them with some integer elements.
  2. We use the isSuperset method of setA to check if all elements in setB are also present in setA.
  3. The isSuperset method returns a boolean value: true if setA contains all elements of setB, and false otherwise.
  4. We print the result to the console to verify whether setA is a superset of setB.

Swift Program

let setA: Set<Int> = [1, 2, 3, 4, 5]
let setB: Set<Int> = [2, 3]
let isSuperset = setA.isSuperset(of: setB)
print("Is setA a superset of setB? (isSuperset)")

Output

Is setA a superset of setB? true

2 Check if One Set of Strings is a Superset of Another Set

In this example,

  1. We create two sets named setA and setB and initialize them with some string elements.
  2. We use the isSuperset method of setA to check if all elements in setB are also present in setA.
  3. The isSuperset method returns a boolean value: true if setA contains all elements of setB, and false otherwise.
  4. We print the result to the console to verify whether setA is a superset of setB.

Swift Program

let setA: Set<String> = ["apple", "banana", "cherry"]
let setB: Set<String> = ["banana", "cherry"]
let isSuperset = setA.isSuperset(of: setB)
print("Is setA a superset of setB? (isSuperset)")

Output

Is setA a superset of setB? true

Summary

In this tutorial, we learned How to check if a Set contains all the items of Another Set in Swift language with well detailed examples.


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