Map的排序输出

TreeMap<KeyType, ValueType> map = new TreeMap<>();

map.put(key1, value1);
map.put(key2, value2);
// 添加更多的键值对

// 按键排序
Map<KeyType, ValueType> sortedByKey = new TreeMap<>(map);

// 按值排序
Comparator<ValueType> valueComparator = new Comparator<ValueType>() {
    @Override
    public int compare(ValueType value1, ValueType value2) {
        // 自定义比较逻辑
    }
};
Map<KeyType, ValueType> sortedByValue = new TreeMap<>(new KeyComparator(valueComparator));

for (Map.Entry<KeyType, ValueType> entry : sortedByKey.entrySet()) {
    KeyType key = entry.getKey();
    ValueType value = entry.getValue();
    // 处理排序后的键值对
}