package Oct2016;import java.util.SortedSet;import java.util.TreeSet;public class Ques1031 {    public static void main(String[] args) {        SortedSet
     
       set = new TreeSet
      
       ();        set.add(new People(170));        set.add(new People(165));        for(People people : set){            System.out.println("身高："+people.getHeight());        }        System.out.println();        // 将身高矮的人变高        set.first().setHeight(175);  // 之前排在第一位的人就是最矮的        for(People people : set){            System.out.println("身高："+people.getHeight());        }    }}class People implements Comparable
       
        {    private int height;    public People(int height) {        super();        this.height = height;    }    public int getHeight() {        return height;    }    public void setHeight(int height) {        this.height = height;    }    @Override    public int compareTo(People p) {        // 按身高从矮到高排序        return height - p.height;    }}
       
      
     

今日问题： 

请问主程序输出结果是？（点击以下“【Java每日一题】20161031”查看20161028问题解析） 

题目原发布于公众号、简书：， 

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