map集合排序工具类

- 日理万妓 2022-02-03 15:25 273阅读 0赞

import java.util.*;
    
    /**
     * @author lzy
     * @Date 2019/5/9 17:17
     * @Version 1.0
     * @name 排序工具类
     */
    public class SortUtils {
        /**
         * 功能描述:Map从大到小排序
         * @param: [stringListMap] Map<String,List<T>>
         * @return: java.util.List<java.util.Map.Entry<java.lang.String,org.apache.poi.ss.formula.functions.T>>
         * @auther: lzy
         * @date: 2019/5/9 17:32
         * @param stringListMap
         */
        public static <T> List<Map.Entry<String, T>> getmapDescSort(Map<String, T> stringListMap){
            List<Map.Entry<String, T>> lists=new ArrayList<>();
            lists.addAll(stringListMap.entrySet());
            Collections.sort(lists,new Comparator<Map.Entry<String,T>>() {
                @Override
                public int compare(Map.Entry<String, T> o1, Map.Entry<String, T> o2) {
                    return o2.getKey().compareTo(o1.getKey());
                }
            });
            return lists;
        }
    
        /**
         * 功能描述:Map从小到大排序
         * @param: [stringListMap] Map<String,List<T>>
         * @return: java.util.List<java.util.Map.Entry<java.lang.String,org.apache.poi.ss.formula.functions.T>>
         * @auther: lzy
         * @date: 2019/5/9 17:31
         */
        public static <T>  List<Map.Entry<String, T>> getmapAscSort(Map<String,T> stringListMap){
            List<Map.Entry<String, T>> lists=new ArrayList<>();
            lists.addAll(stringListMap.entrySet());
            Collections.sort(lists,new Comparator<Map.Entry<String,T>>() {
                @Override
                public int compare(Map.Entry<String, T> o1, Map.Entry<String, T> o2) {
                    return o1.getKey().compareTo(o2.getKey());
                }
            });
            return lists;
        }
    
    
        public static void main(String[] args) {
    
        }
    }