JAVA九九乘法表的各种写法

1.正

    for (int i = 1; i <=9 ; i++) {
            for (int j = 1; j <=i ; j++) {
                System.out.print(j+"x"+i+"="+i*j+"t");

            }
            System.out.println();
        }

2.倒

   for (int i = 9; i >=1 ; i--) {
            for (int j = 1; j <=i ; j++) {
                System.out.print(j+"x"+i+"="+j*i+"t");
            }
            System.out.println();
        }

3.反倒

     for (int i=9;i>=1;i--){
            for (int k=1;k<=2*(9-i);k++){
                System.out.print("t");
            }
            for (int j=1;j<=i;j++){
                System.out.print(j+"*"+i+"="+j*i+"t");
            }
            System.out.println();
        }

4.反正

     for (int i = 1; i <= 9; i++) {
            for (int k = 1; k <= 2 * (9 - i); k++) {
                System.out.print("t");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print(j + "*" + i + "=" + j * i + "t");
            }
            System.out.println();
        }