package Oct2016; import java.util.SortedSet; import java.util.TreeSet; public class Ques1031 { public static void main(String[] args) { SortedSet<People> set = new TreeSet<People>(); 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<People>{ 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)
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