1 @Test 2     /** 3      * 测试打印w图案 4      */ 5     public void testPrintW() { 6         int[][] arr = new int[3][9]; 7         // 初始化x，y 8         int x = 2; 9         int y = 0;10         boolean flag = false;11         for (int i = 1; i < 10; i++) {12             arr[x][y] = i;13 14             y++; // y轴一直是递增15 16             if (!flag) {17                 x++;18             }19             if (flag) {20                 x--;21             }22             if (x < 0) {23                 x = x + 2;24                 flag = !flag;25             }26             if (x > 2) {27                 x = x - 2;28                 flag = !flag;29             }30         }31         for (int i = 0; i < arr.length; i++) {32             for (int j = 0; j < arr[i].length; j++) {33                 if (arr[i][j] == 0) {34                     System.out.print(" ");35                 } else {36                     System.out.print(arr[i][j]);37                 }38             }39             System.out.println();40         }41     }