MapUtil.java

package com.example.game2d;

import android.os.Build;

import androidx.annotation.RequiresApi;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

// https://stackoverflow.com/questions/109383/sort-a-mapkey-value-by-values
public class MapUtil {
    @RequiresApi(api = Build.VERSION_CODES.N)
    public static <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
        List<Map.Entry<K, V>> list = new ArrayList<>(map.entrySet());
        list.sort(Collections.reverseOrder(Map.Entry.comparingByValue()));

        Map<K, V> result = new LinkedHashMap<>();
        for (Map.Entry<K, V> entry : list) {
            result.put(entry.getKey(), entry.getValue());
        }

        return result;
    }
}