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import UIKit
// Set Is A collection which keeps elements without indexes
// A Set Is Mostly Used To Compare 2 Different Data Groups
// n1 Is An Int Set Which Contains 5 Elements
var n1:Set<Int> = [ 0, 2, 4, 6, 8]
// n2 Is An Int Set Which Contains 5 Elements
var n2:Set<Int> = [ 0, 2, 3, 5, 8]
// Insert A Value To N1
n1.insert(3)
n1.insert(-1)
// Insert A value to N2
n2.insert(9)
n2.insert(-3)
print("N1 : (n1)")
print("N2 : (n2)")
// Union N1 & N2
var unionSet = n1.union(n2)
print("Union n1 & n2 = (unionSet)")
// Intersect N1 & N2
var intersectSet = n1.intersection(n2);
print("Intersection Of n1 & n2 = (intersectSet)")
// Difference (Others Than Intersection
var diffSet = n1.symmetricDifference(n2)
print("Sym. Difference Of N1 & N2 = (diffSet)")
// Clear A Set
n1.removeAll()
print("N1 is Empty : (n1.isEmpty)")
print("Count Of N2 : (n2.count)")
var s1:Set<Int> = [ 0, 2, 4]
var s2:Set<Int> = [ 0, 1, 2, 3, 4, 5]
print("Is s1 SubSet Of s2 = (s1.isSubset(of: s2))")
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