根據Map值 double 類型的進行排序

/**
 * 將集合按照降序排列-Double
 * @param nowPartTwoData
 * @return
 */
private static List<Map<String,Double>> sortByValueFloatDesc(Map<String, Double> nowPartTwoData) {
    List<Map.Entry<String, Double>> lists = new ArrayList<Map.Entry<String, Double>>(nowPartTwoData.entrySet());
    Collections.sort(lists, new Comparator<Map.Entry<String, Double>>() {
        public int compare(Map.Entry<String, Double> o1, Map.Entry<String, Double> o2) {
            Double q1 = Double.parseDouble(o1.getValue()+"");
            Double q2 = Double.parseDouble(o2.getValue()+"");
            Double p = q2 - q1;
            if (p > 0) {
                return 1;
            } else if (p == 0) {
                return 0;
            } else
                return -1;
        }
    });
    for (Map.Entry<String, Double> set : lists) {
        System.out.println(set.getKey() + " " + set.getValue());
    }
    return null;
}