practise_sets.swift

import Foundation

var testingSet = Set<Int>()

// acessing and modifying sets
testingSet.insert(1)

print(testingSet)

print(testingSet.count)

print(testingSet.remove(1))

print(testingSet.isEmpty)

let evenSet: Set = [0, 2, 4, 8]
let oddSet: Set = [1, 3, 5, 7]
let primeSet: Set = [2, 3, 5, 7]

// union
print(evenSet.union(oddSet))
print(evenSet.union(oddSet).sorted())

// intersection
print(oddSet.intersection(primeSet))
print(oddSet.intersection(primeSet).sorted())

// subtraction
print(primeSet.subtracting(evenSet))
print(primeSet.subtracting(evenSet).sorted())