package Testing;

import java.util.*;

public class FindDuplicateInArray {

public static void main(String[] args) {

String[] names = {"ddf", "Java", "Python", "C", "Ruby", "Java", "Python", "Perl"};

//using hashset

Set<String> store = new HashSet<String>();

for(String name : names)

{

if(store.add(name) == false)

{

System.out.println("Duplicate in array are:" +name);

}

}

// using hashmap

Map<String,Integer> storeMap = new HashMap<String, Integer>();

for(String name : names)

{

Integer count = storeMap.get(name);

if(count == null)

storeMap.put(name,1);

else

storeMap.put(name, ++count);

}

Set<Map.Entry<String,Integer>> entrySet = storeMap.entrySet();

for (Map.Entry<String,Integer> entry : entrySet)

{

if(entry.getValue() > 1)

{

System.out.println("duplicate elements are:" +entry.getKey()+ "Count is:" +entry.getValue());

}

}

}

}