Java第一次作业

package homework;

public class First {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("学号：193230435");
        System.out.println("班级：计算机1904");
        System.out.println("姓名：袁铭泽");
    }

}

 

 

package homework;

public class First1 {

    /**
     * @param args
     */
    int i,j,k;
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int i, j, k;
        for (i = 1; i <= 2; i++) {
            for (j = 1; j <= 4 - i; j++)
                System.out.print(" ");
            for (k = 1; k <= 2 * i - 1; k++)
                System.out.print("*");
            System.out.print("\n");
        }
        for (i = 1; i <= 3; i++) {
            for (j = 1; j <= i; j++)
                System.out.print(" ");
            for (k = 1; k <= 7 - 2 * i; k++)
                System.out.print("*");
            System.out.print("\n");
        }
        System.out.println();
    }

}

 

 

package homework;

public class First2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a=5;
        int b=8;
        System.out.println(a*a+b*b);
    }

}