工具类Collections

public class Test1 {
    public static void main(String[] args){
        List<String> list = new ArrayList<>();
        Collections.addAll(list, "95","91","94","93","92","90");
        System.out.println(list);//[95, 91, 94, 93, 92, 90]
        Collections.sort(list);
        System.out.println(list);//[90, 91, 92, 93, 94, 95]
        
        Collections.sort(list,new Comparator<String>() {

            @Override
            public int compare(String str1, String str2) {
                int a = Integer.parseInt(str1);
                int b = Integer.parseInt(str2);
                
                if(a>b){
                    return -1;
                }
                if(a<b){
                    return 1;
                }
                return 0;
            }
        });
        System.out.println(list);//[95, 94, 93, 92, 91, 90]
    }
}