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import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
public class Main {
public static void main(String[] args) {
// Set demonstration using HashSet
Set hashSet = new HashSet<>();
hashSet.add(23);
hashSet.add(4);
hashSet.add(4);
hashSet.add(4);
hashSet.add(10);
for (int element: hashSet) {
System.out.println(element + " ");
}
// hashSet.isEmpty(); // returns true, if Set is empty
// hashSet.contains(10); // returns true, if the element is found
// hashSet.remove(23); // returns true, if the element was deleted
// hashSet.clear(); // Deletes all element
System.out.println();
Set treeSet = new TreeSet<>();
treeSet.add(23);
treeSet.add(4);
treeSet.add(4);
treeSet.add(4);
treeSet.add(10);
treeSet.add(1);
for (int element: treeSet) {
System.out.println(element + " ");
}
}
}
/*
* Set: Interface
* HashSet: Implementation
* TreeSet: Implementation [sorted]
*
* Properties:
* 1. Unordered Collection
* 2. Cannot store duplicate elements
* 3. It has more implementation such as HashSet, TreeHashSet and TreeSet
*
* TreeSet contains elements in Sorted Order
* */