03. Odd Occurrences

package associativeArrays;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

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 word : inputArr) {
            word = word.toLowerCase();

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

//            -v.01-
//            if (wordsMap.containsKey(word)) {
//                wordsMap.put(word, wordsMap.get(word) + 1);
//            } else {
//                wordsMap.put(word, 1);
//            }

//            -v.01-
//            if (!wordsMap.containsKey(word)) {
//                wordsMap.put(word, 0);
//            }
//
//            wordsMap.put(word, wordsMap.get(word) + 1);
        }

        ArrayList<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));

    }
}