wangrong
2021-11-24 130b72d6c5734f8acaac0214b6dfe5c8bfa319c3
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package com.example.demo.utils;
 
import java.util.Comparator;
 
public class MapKeyComparator implements Comparator<String> {
     
        public int compare(String s1, String s2) {
            return s1.compareTo(s2);  //从小到大排序
 
}
        }