hashing.java

import java.util.HashSet;
// import java.util.Iterator;
public class hashing {
    public static void main(String[] args) {
        //Creation
        HashSet<Integer> set = new HashSet<>();
        //Insertion
        set.add(1);
        set.add(2);
        set.add(3);
        set.add(1);
        //Search - contains
        // if(set.contains(1)){
        //     System.out.println("Set contains 1");
        // }
        // if(!(set.contains(6))){
        //     System.out.println("Does not contain");
        // }

        // //Delete
        // set.remove(1);
        // if(!(set.contains(1))){
        //     System.out.println("does not contain 1");
        // }

        // System.out.println("Size of set is : " + set.size());

        //Print all elements
        // System.out.println(set);

        //Iterator
        // Iterator it = set.iterator();
        // //hasNext; next
        // while(it.hasNext()){
        //     System.out.println(it.next());
        // }

    }
}