旋转打印矩阵

本文主要是介绍旋转打印矩阵，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

 1 public class PrintMatrixSpiralOrder {                                             
 2     public static void printEdge(int[][] m,int tR,int tC,int dR,int dC){                  
 3         if(tR == dR)                                                                      
 4         {                                                                                 
 5             for(int i = tC;i <= dC;i++)                                                   
 6             {                                                                             
 7                 System.out.print(m[tR][i] + " ");                                         
 8             }                                                                             
 9         }else if(tC == dC){                                                               
10             for(int i = tR;i <= dR;i++)                                                   
11             {                                                                             
12                 System.out.print(m[i][tC] + " ");                                         
13             }                                                                             
14         }else{                                                                            
15             int curC = tC;                                                                
16             int curR = tR;                                                                
17             while(curC != dC){                                                            
18                 System.out.print(m[tR][curC++] + " ");                                    
19             }                                                                             
20             while(curR != dR){                                                            
21                 System.out.print(m[curR++][dC] + " ");                                    
22             }                                                                             
23             while (curC != tC){                                                           
24                 System.out.print(m[dR][curC--] + " ");                                    
25             }                                                                             
26             while (curR != tR){                                                           
27                 System.out.print(m[curR--][tC] + " ");                                    
28             }                                                                             
29         }                                                                                 
30     }                                                                                     
31                                                                                           
32     public static void printSpiral(int[][] matrix){                                       
33         int tR = 0;                                                                       
34         int tC = 0;                                                                       
35         int dR = matrix.length - 1;                                                       
36         int dC = matrix[0].length - 1;                                                    
37        // System.out.print(dR);                                                           
38        // System.out.print(dC);                                                           
39         while( tR <= dR && tC <= dC ){                                                    
40             printEdge(matrix,tR++,tC++,dR--,dC--);                                        
41         }                                                                                 
42     }                                                                                     
43                                                                                    
44 }                                                                                         
45                                                                                           

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