2、编写一个类Zong2.java，使用双重while循环画图 ****** ****** ****** ****** ******4

可以编写一个名为Zong2的Java类，使用双重循环来画图。以下是示例代码：

public class Zong2 {
    public static void main(String[] args) {
        int row = 5; // 设置行数
        int col = 6; // 设置列数

        int i = 0;
        while (i < row) {
            int j = 0;
            while (j < col) {
                System.out.print("*");
                j++;
            }
            System.out.println();
            i++;
        }
    }
}

这段代码会输出一个5行6列的星号图案，如下所示：

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相关问题

用java 编写一个类Zong1.java，用循环嵌套打印由“*”组成的菱形。具体图像如下： * *** ***** ******* ********* ******* ***** *** *

可以使用Java编写一个名为Zong1的类来打印这个菱形图案。以下是一个示例代码：

public class Zong1 {
    public static void main(String[] args) {
        int n = 5; // 菱形的行数

        // 打印上半部分菱形
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print("*");
            }
            System.out.println();
        }

        // 打印下半部分菱形
        for (int i = n - 1; i >= 1; i--) {
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}

运行以上代码，将会输出所需的菱形图案。

编写一个类Zong1.java，建立一个对象数组，存放10个学生的学号、姓名、成绩，统计这10个学生的平均成绩，搜索最高成绩和最低成绩的学生的姓名和学号。

下面是Zong1.java的代码实现：

public class Zong1 {

    public static void main(String[] args) {
        Student[] students = new Student[10];
        students[0] = new Student("001", "张三", 80);
        students[1] = new Student("002", "李四", 85);
        students[2] = new Student("003", "王五", 90);
        students[3] = new Student("004", "赵六", 75);
        students[4] = new Student("005", "钱七", 70);
        students[5] = new Student("006", "孙八", 95);
        students[6] = new Student("007", "周九", 87);
        students[7] = new Student("008", "吴十", 92);
        students[8] = new Student("009", "郑十一", 78);
        students[9] = new Student("010", "冯十二", 83);

        double sum = 0;
        double avg = 0;
        double maxScore = 0;
        double minScore = Double.MAX_VALUE;
        String maxName = "";
        String maxId = "";
        String minName = "";
        String minId = "";

        for (int i = 0; i < students.length; i++) {
            sum += students[i].getScore();
            if (students[i].getScore() > maxScore) {
                maxScore = students[i].getScore();
                maxName = students[i].getName();
                maxId = students[i].getId();
            }
            if (students[i].getScore() < minScore) {
                minScore = students[i].getScore();
                minName = students[i].getName();
                minId = students[i].getId();
            }
        }

        avg = sum / students.length;

        System.out.println("平均成绩：" + avg);
        System.out.println("最高成绩学生：" + maxName + " 学号：" + maxId + " 成绩：" + maxScore);
        System.out.println("最低成绩学生：" + minName + " 学号：" + minId + " 成绩：" + minScore);
    }

}

class Student {
    private String id;
    private String name;
    private double score;

    public Student(String id, String name, double score) {
        this.id = id;
        this.name = name;
        this.score = score;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getScore() {
        return score;
    }

    public void setScore(double score) {
        this.score = score;
    }
}

输出结果为：

平均成绩：83.5
最高成绩学生：孙八 学号：006 成绩：95.0
最低成绩学生：钱七 学号：005 成绩：70.0