Java循环打印九九乘法表

Posted 2021-10-29 蜜桃婷婷酱

普通代码

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

提出代码改成方法传参

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