我有一个任务要创建一个提示用户输入整数的程序,然后使用 while 循环根据用户输入创建一个乘法表。
输出乘法表必须包括标题行和列。我坚持的是如何创建标题行,因为标题必须计数的数字取决于用户输入。
我在 while 循环中创建了标题列,用于格式化行,因为每次循环通过时都会创建一个新行。但是标题行只打印一次,因此我不能使用格式化列的while循环来创建它。
如何创建标题行,以使用户输入递减回 1,并输出来自 1、2、3、...、用户输入的所有整数值?
这是我所拥有的:
import java.util.Scanner;
public class Multiplication
{
public static void main(String[] args)
{
int number;
String yesno = "Y";
Scanner keyboard = new Scanner(System.in);
System.out.print ("This program generates a multiplication table ");
System.out.println("based on a number you enter.");
while(yesno.equalsIgnoreCase("Y"))
{
System.out.println("Please enter a number.");
number = keyboard.nextInt();
int row = 1;
int column = 1;
System.out.println(" |" + MAKETHISWORK + "\t"); //THIS IS WHERE I'M STUCK.
System.out.println("--------------------");
while(number>0)
{
row = 1;
while(row <= number)
{
System.out.print(row + "|");
column = 1;
while(column <= number)
{
System.out.print(row*column + "\t");
column ++;
} //END WHILE COLUMN <= NUMBER
System.out.println();
row ++;
} //END WHILE ROW <=NUMBER
System.out.println();
while(number>0)
{
number--;
}
} //END WHILE NUMBER >0
System.out.println("Would you like to enter another number? (Y/N) ");
yesno = keyboard.nextLine();
yesno = keyboard.nextLine();
} //END WHILE YESNO IS Y
while(yesno.equalsIgnoreCase("N"))
{
System.out.println("Thanks for participating!");
break;
}
}
}