03. Odd Occurrences

package associativeArrays;

import java.util.*;

public class P03OddOccurrences {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String[] inputArr = scanner.nextLine().split(" ");

        LinkedHashMap<String, Integer> wordsMap = new LinkedHashMap<>();
        for (String item : inputArr) {
            item = item.toLowerCase();

            wordsMap.putIfAbsent(item, 0);
            wordsMap.put(item, wordsMap.get(item) + 1);

//            if (!wordsMap.containsKey(item)) {
//                wordsMap.put(item, 1);
//            } else {
//                int value = wordsMap.get(item);
//                wordsMap.put(item, value + 1);
//            }
        }

        List<String> resultList = new ArrayList<>();
        for (Map.Entry<String, Integer> entry : wordsMap.entrySet()) {
            if (entry.getValue() % 2 != 0) {
                resultList.add(entry.getKey());
            }
        }
        System.out.println(String.join(", ", resultList));
    }
}