使用嵌套循环创建交替式瓷砖地板

Question

我正在尝试创建一个程序，用于从用户的输入中输出替代瓷砖设计。 I.E.如果3结果运用投入将是一个3x3的设计，看起来像：

|R|B|R| 
|B|R|B| 
|R|B|R| 

我遇到了越来越瓷砖适量的输出问题。对于3的输入，第2行有一个额外的“| R |”随后创建第四行。输出出来到：

|R|B|R| 
|B|R|B|R| 
|R|B|R| 
|B 

我下面附上我的代码。我知道它有什么关系：

if (r%2 == 0){ 
System.out.println("|"); 
System.out.print("|B"); 

有什么想法？

import java.util.*; 

public class tileFloor { 

    public static void main(String[] args) { 
    // TODO Auto-generated method stub 
    Scanner input = new Scanner (System.in); 
    System.out.println("Enter x:"); 
     int x; 
      x = input.nextInt(); 

    if (x < 10) 
    { int c = 0; 
     int r = 0; 

     while (r < x){ 
      while (c < x){ 
       if (c %2 == 0) 
       System.out.print("|R"); 
       else if (c%2 != 0) 
       System.out.print("|B"); 

      c++; 

      }//end 'while (c<x)' loop 

     if (r%2 == 0){ 
      System.out.println("|"); 
      System.out.print("|B"); 
     } 
     else if (r%2 != 0) 
      System.out.println("|"); 

     c = 0; 
     r++; 

     }//end 'while (r<x)' loop 

    }//end if statement 

    input.close(); 

}//end main 

}//end class 

Answer 1

试试这个

import java.util.*; 

class tileFloor { 

    public static void main(String[] args) { 
    // TODO Auto-generated method stub 
    Scanner input = new Scanner (System.in); 
    System.out.println("Enter x:"); 
     int x; 
      x = input.nextInt(); 
    int count = 0; 
    if (x < 10) 
    { int c = 0; 
     int r = 0; 

     while (r < x){ 
     if(r%2 == 0) 
     { 
      count = 0; 
     } 
     else 
     { 
      count = 1; 
     } 
      while (c < x){ 


       if (count %2 == 0) 
       { 
        System.out.print("|R"); 
       } 
       else 
       { 
        System.out.print("|B"); 
       } 

      count++; 
      c++; 

      }//end 'while (c<x)' loop 


      System.out.println("|"); 

     c = 0; 
     r++; 

     }//end 'while (r<x)' loop 

    }//end if statement 

    input.close(); 

}//end main 

}//end class 

Answer 2

这个怎么样的解决方案？它明确地更清楚它是什么：

public static void main(String[] args) { 
    try (Scanner input = new Scanner(System.in)) { 
     System.out.print("Enter x: "); 
     int x = input.nextInt(); 

     if (x < 10) { 
      int r = x; 
      int c; 

      while (r-- > 0) { 
       c = x; 

       while (c-- > 0) { 
        System.out.print("|" + ((c + r & 1) == 0 ? "R" : "B")); 
       } 

       System.out.println("|"); 
      } 
     } 
    } 
}