Question

我正在尝试在java中创建一个程序，该程序将为赋值创建一个10（行）乘15（列）三角形乘法表。在赋值中，我们必须使用常量IMAX = 10和JMAX = 15。我在下面附上了一张桌子应该是什么样子的照片。我已经得到了表的第一个但是我在设法停止数学和第10行以及在列号中添加边框时遇到了麻烦。帮助将不胜感激。
同样为了解决这个问题，我们允许使用if / else语句，for循环和/或while循环

Multiplication table link

public class Question2 {
    public static void main(String[] args) {
            // TODO Auto-generated method stub

        final int IMAX= 15, JMAX=10;    

        for (int i = 1; i <= JMAX; i++) 
        {
            System.out.print( i + "  ");
        }

        System.out.println();
        System.out.print("--------------------------------------------------------" );
        System.out.println();

        for (int i = 1; i <= IMAX; i++){
            for (int j = 1; j <= i; j++) 
            {
                System.out.print(i*j + " " );
            }
            System.out.println();
        }           
    }           
}

Answer 1

   public static void main(String[] args) {
        final int IMAX = 15, JMAX = 10;
        System.out.print("   |");
        for (int i = 1; i <= JMAX; i++) {
            System.out.print(i + "  ");
        }
        System.out.println();
        System.out.print("--------------------------------------------------------");
        System.out.println();
        for (int i = 1; i <= IMAX; i++) {
            if (i < 10) {
                System.out.print(i + "  |");
            } else {
                System.out.print(i + " |");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print(i * j + " ");
                if (j == JMAX) {
                    break;
                }
            }
            System.out.println();
        }
    }

Answer 2

这是Java中的乘法表

import java.util.*;
public class table
{
    public static void main()
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter a number");
        int a = sc.nextInt();
        for (int i=1; i <=12; i++)
        System.out.println(a+ "    x    " +i + "   =   " +a*i);
    }
}

您可以根据需要更改变量名称

Answer 3

这应该做：

public class HelloWorld {

    public static void main(String[] args) {
        final int IMAX= 15, JMAX=10;

        System.out.print("   |");
        for (int i = 1; i <= JMAX; i++) {
            System.out.printf("%-4d", i);
        }
        System.out.println();
        System.out.print("--------------------------------------------------------" );
        System.out.println();

        for (int i = 1; i <= IMAX; i++) {
            System.out.printf("%-3d|", i);
            for (int j = 1; j <= i && j <=JMAX; j++) {
                System.out.printf("%-4d", i*j);
            }
            System.out.println();
        }

    } 

}

Answer 4

你可以用数百万种不同的方式做到这一点！

public class Test
{
   private static final int ROWS = 15;
   private static final int COLS = 10;

   public static final void main(final String... args) {
      for (int i = 0; i <= ROWS; i++) {
         if (i < 1) {
            System.out.printf("%5s", " | ");

            for (int k = 1; k <= COLS; k++) {
               System.out.printf("%-4d", k);
            }

            System.out.println();
            System.out.println("____________________________________________");
            continue;
         }

         System.out.printf("%5s", i + " | ");

         for (int j = 1; j <= i && j <= COLS; j++) {
            System.out.printf("%-4d", i * j);
         }

         System.out.println();
      }
   }
}

java中的三角乘法表

4 个答案: