打印两行彼此格式化

Question

我正在尝试格式化乘法表的输出，其中一行只能有 5 个数字/整数。我正在 for 循环中使用 printf 方法尝试此操作，但到目前为止还没有工作。

代码：

System.out.println("Which multiplication table do you want to print?: ");

int number = input.nextInt();

int calculation;

System.out.println("Multiplication table: " + number + ":");

for (int i = 1; i <= 10; i++ ) {

    calculation = number * i;

    System.out.printf("%-5s ", calculation);

}

我的输出：

3    6    9    12   15   18   21   24   27   30  

我试图得到的输出：

 3    6    9    12   15

 18   21   24   27   30 

Answer 1

每 5 个数字打印一个换行符：calculation = number * i;System.out.printf("%-5s ", calculation);if (i % 5 == 0) {&nbsp; &nbsp;System.out.println();}&nbsp; &nbsp;&nbsp;

Answer 2

我认为你有多种选择来实现这一点： 1. 在第 5 次迭代后打印一个新的空行 2. 添加"\n"到行尾标记1.for (int i = 1; i <= 10; i++ ) {&nbsp; &nbsp; &nbsp; &nbsp; calculation = number * i;&nbsp; &nbsp; &nbsp; &nbsp; if (i % 5 == 0) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;System.out.println();&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; System.out.printf("%-5s ", calculation);}2.for (int i = 1; i <= 10; i++ ) {&nbsp; &nbsp; &nbsp; &nbsp; calculation = number * i;&nbsp; &nbsp; &nbsp; &nbsp; if (i % 5 == 0) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;System.out.printf("\n");&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; System.out.printf("%-5s ", calculation);}希望这可以帮助

Answer 3

打印 5 个元素后打印换行符：if(i % 5 == 0)&nbsp; &nbsp;System.out.println();