迭代器模式
今天做了迭代器模式的实验，用了差不多两个小时的时间，理解了迭代器模式的原理，下面是迭代器模式的实验要求和实现。
实验要求：
信1305班共44名同学，每名同学都有姓名，学号和年龄等属性，分别使用JAVA内置迭代器和C++中标准模板库（STL）实现对同学信息的遍历，要求按照学号从小到大和从大到小两种次序输出学生信息。
实现截图：
代码部分：
package 实验18迭代器模式;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ComparableTest1 {
public static void main(String[] args) {
Student s1 = new Student(1, "张三", 50);
Student s2 = new Student(3, "李1", 30 );
Student s3 = new Student(5, "王2", 29 );
Student s4 = new Student(5, "高3", 34 );
Student s5 = new Student(6, "高3", 34 );
Student s6 = new Student(58, "高3", 34 );
Student s7 = new Student(69, "高3", 34 );
Student s8 = new Student(86, "高3", 34 );
Student s9 = new Student(28, "高3", 34 );
Student s10 = new Student(68, "高3", 34 );
Student s11= new Student(354, "高3", 34 );
Student s12 = new Student(24, "高3", 34 );
Student s13= new Student(768, "高3", 34 );
Student s14 = new Student(270, "高3", 34 );
Student s15 = new Student(767, "高3", 34 );
Student s16 = new Student(77, "高3", 34 );
Student s17 = new Student(78, "高3", 34 );
Student s18 = new Student(80, "高3", 34 );
Student s19 = new Student(81, "高3", 34 );
Student s20 = new Student(82, "高3", 34 );
Student s21 = new Student(83, "高3", 34 );
Student s22 = new Student(84, "高3", 34 );
Student s23 = new Student(85, "高3", 34 );
Student s24 = new Student(86, "高3", 34 );
Student s25 = new Student(87, "高3", 34 );
Student s26 = new Student(88, "高3", 34 );
Student s27 = new Student(89, "高3", 34 );
Student s28 = new Student(90, "高3", 34 );
Student s29 = new Student(91, "高3", 34 );
Student s30 = new Student(29, "高3", 34 );
Student s31 = new Student(92, "高3", 34 );
Student s32 = new Student(93, "高3", 34 );
Student s33 = new Student(94, "高3", 34 );
Student s34 = new Student(95, "高3", 34 );
Student s35 = new Student(96, "高3", 34 );
Student s36 = new Student(97, "高3", 34 );
Student s37 = new Student(98, "高3", 34 );
Student s38 = new Student(99, "高3", 34 );
Student s39 = new Student(100, "高3", 34 );
Student s40 = new Student(101, "高3", 34 );
Student s41 = new Student(102, "高3", 34 );
Student s42 = new Student(103, "高3", 34 );
Student s43 = new Student(104, "高3", 34 );
Student s44 = new Student(105, "高3", 34 );
List<Student> list = new ArrayList<Student>();
list.add(s1);
list.add(s2);
list.add(s3);
list.add(s4);
list.add(s5);
list.add(s6);
list.add(s7);
list.add(s8);
list.add(s9);
list.add(s10);
list.add(s11);
list.add(s12);
list.add(s13);
list.add(s14);
list.add(s15);
list.add(s16);
list.add(s17);
list.add(s18);
list.add(s19);
list.add(s20);
list.add(s21);
list.add(s22);
list.add(s23);
list.add(s24);
list.add(s25);
list.add(s26);
list.add(s27);
list.add(s28);
list.add(s29);
list.add(s30);
list.add(s31);
list.add(s32);
list.add(s33);
list.add(s34);
list.add(s35);
list.add(s36);
list.add(s37);
list.add(s38);
list.add(s39);
list.add(s40);
list.add(s41);
list.add(s42);
list.add(s43);
list.add(s44);
Collections.sort(list);
System.out.println("按照学号从小到大进行排序输出: ");
for(Student stu : list){
System.out.println(stu.toString());
}
}
}
package 实验18迭代器模式;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* 通过实现comparable接口来比较多个对象的属性值,并按顺序输出
* @author young
*
*/
class Student implements Comparable<Student> {
private int id;
private String name;
private int age;
public Student(int id, String name, int age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
// 三个返回结果都要写出来
public int compareTo(Student o) {
if(this.id > o.id){
return -1;
}else if(this.id < o.id){
return 1;
}else {
return 0;
}
}
public int compareTo2(Student o) {
if(this.id < o.id){
return -1;
}else if(this.id > o.id){
return 1;
}else {
return 0;
}
}
@Override
public String toString(){
return "姓名: " + this.name + ". 学号: " + this.id + ". 年龄: " + this.age
;
}
}
