test.java~67~

继承和多态 实验目的： 1、 掌握继承和多态的概念与实现方法 2、 掌握如何从已有的类中派生子类并继承父类 3、 掌握方法的覆盖和重载 实验内容： 设计一个通用的排序算法

package generalSort;

/**
 * <p>Title: Test</p>
 *
 * <p>Description: A class to test the function of the generalSort algorithm</p>
 *
 * <p>Copyright: Copyright (c) 2008 All rights reserved</p>
 * <p>Organization :Shandong University </p>
 * @Email:[e-mail]
 * @author: Xiao Ruohan
 * @version 1.0
 */
public class Test {
    public Test() {
    }

    public static String print(Object ob[]) {
        String str = "";
        for (int i = 0; i < ob.length; i++) {
            //System.out.println(ob[i].toString());
            str += ob[i].toString() + "\n";
        }
        return str;
    }

    public static void main(String[] args) {
        Student s[] = new Student[5];
        int s_len = s.length;
        Rectangle r[] = new Rectangle[5];
        int r_len = r.length;
        Student s_temp;
        Rectangle r_temp;
        SortTest st = new SortTest();
        FileRecord fr = new FileRecord();
        int i = 0;
        int j = 0;
        int scale = 26;
        String befSort =
                "**************************Before sorting**************************";
        String aftSort =
                "**************************After  sorting**************************";
        String endStr =
                "<-----------------------Report      ends--------------------------->";

        //System.out.println(befSort);
        fr.append_tofile(befSort);
        for (i = 0; i < s_len; i++) {
            s[i] = new Student((int) (scale * Math.random()) + 1,
                               StringPlus.randomString(), 2);
        }

        fr.append_tofile(print(s));

        for (i = 0; i < r_len; i++) {
            r[i] = new Rectangle((int) (scale * Math.random()) + 1,
                                 (int) (scale * Math.random()) + 1);
        }

        fr.append_tofile(print(r));

        //System.out.println(aftSort);
        fr.append_tofile(aftSort);

        for (i = 0; i < s_len; i++) {
            for (j = 1; j < s_len - i; j++) {
                if (st.compare(s[j], s[j - 1]) < 0) {
                    st.swapObject(s, j, j - 1);
                }
            }

        }

        fr.append_tofile(print(s));

        for (i = 0; i < r_len; i++) {
            for (j = 1; j < r_len - i; j++) {
                if (st.compare(r[j], r[j - 1]) < 0) {
                    st.swapObject(r, j - 1, j);
                }
            }

        }

        fr.append_tofile(print(r));
        fr.append_tofile(endStr);
        fr.open_file();
    }
}