使用Java打印数字组成的魔方阵及字符组成的钻石图形

   1  2  3     8  9  4     7  6  5 

  1  2  3  4   12  13  14  5   11  16  15  6    10  9  8  7

package cn.dfeng; import java.util.Arrays; import java.util.Scanner; public class Maze {   enum Direction{     UP, DOWN, RIGHT, LEFT;   }   public int[][] buidMaze( int n ){     int[][] maze = new int[n][n];     for( int[] a : maze ){       Arrays.fill(a, 0);     }          int col = 0;     int row = 0;     int counter = 1;     Direction d = Direction.RIGHT;          while( true ){       if( maze[row][col] == 0 ){         maze[row][col] = counter++;                  switch (d) {           case RIGHT:              if( col + 1< n && maze[row][col + 1] == 0){               col ++;             }else{               d = Direction.DOWN;               row ++;             }             break;           case DOWN:             if( row + 1 < n && maze[row + 1][col] == 0){               row ++;             }else{               d = Direction.LEFT;               col --;             }             break;           case LEFT:             if( col - 1 >= 0 && maze[row][col-1] == 0){               col --;             }else{               d = Direction.UP;               row --;             }             break;           default:             if( row - 1 >= 0 && maze[row - 1][col] == 0){               row --;             }else{               d = Direction.RIGHT;               col ++;             }             break;         }                }else{         break;       }     }     return maze;   }      public void printMaze( int[][] maze ){          for( int[] row : maze ){       for( int i : row ){         System.out.printf("%3d", i);       }       System.out.println();     }        }   /**    * @param args    */   public static void main(String[] args) {     Scanner sc = new Scanner(System.in);     System.out.println("Please input the size of the maze:");     int size = sc.nextInt();     Maze maze = new Maze();     int[][] m = maze.buidMaze( size );     maze.printMaze( m );   } } 

package cn.dfeng; /**  * 该类能够用*打印大小的钻石图形  * @author dfeng  *  */ public class Drawer {      /**    * 打印钻石图形    * @param n 钻石大小    */   public void printDiamond( int n ){     System.out.println();     int i = 0;     boolean flag = true;     while( i >= 0 ){       if (i < n) {         for (int j = 0; j < n - i; j++) {           System.out.print(" ");         }         for (int j = n - i; j <= n + i; j += 2) {           System.out.print("* ");         }         System.out.println();       }       if (i == n) {         flag = false;         i--;       }       if (flag) {         i++;       } else {         i--;       }     }        } }