出现频率前K高的元素

import java.util.*;
class Solution {
    public List topKFrequent(int[] nums, int k) {
        Map m = new LinkedHashMap<>();
        //存入map
        for(int i=0;i > l = new ArrayList<>(m.entrySet());
        Collections.sort(l,new Comparator>(){
            @Override
            public int compare(Map.Entry  o1,
            Map.Entry  o2){
                return o2.getValue()-o1.getValue();

            }
        });

        List res = new ArrayList();
        for(int i = 0;i

题目