Java的基础--九九乘法表的学习

通过循环来实现四种不同的九九乘法表

public class Jjcfb1 {
    public static void main(String[] args) {
        for (int i=1;i<=9;i++){
            for (int j=1;j<=i;j++){
                System.out.print(i+"*"+j+"="+i*j+"t");
            }
            System.out.println();
        }
    }
}

运行结果:

public class Jjcfb2 {
    public static void main(String[] args) {
        for (int i=9;i>=1;i--){
            for (int j=1;j<=i;j++){
                System.out.print(i+"*"+j+"="+i*j+"t");
            }
            System.out.println();
        }
    }
}

运行结果:

public class Jjcfb3 {
    public static void main(String[] args) {
        for (int i = 1; i < 10; i++) {
            for (int j = 9; j >=i; j--) {
                System.out.print(j+"*"+i+"="+i*j+"t");
            }
            System.out.println();
        }
    }
}

运行结果；

public class Jjcfb4 {
    public static void main(String[] args) {
        for (int i = 9; i >= 1; i--) {
            for (int j = 9; j >= i; j--) {
                System.out.print(j + "*" + i + "=" + i * j + "t");
            }
            System.out.println();
        }
    }
}

运行结果: