public static <K, V> Map<K, V> sortByValue(Map<K, V> map, final Comparator<? super V> comparator) {
		return sortByValueInternal(map, new EntryValueComparator<K, V>(comparator));
	}
public static < K , V > Map < K , V > sortByValue ( Map < K , V > map , final Comparator < ? super V > comparator ) { return sortByValueInternal ( map , new EntryValueComparator < K , V > ( comparator ) ) ; }
对一个Map按Value进行排序，返回排序LinkedHashMap.