# -*- coding:utf-8 -*-

 class Solution:

     # matrix类型为二维列表，需要返回列表

     def printMatrix(self, matrix):

         # write code here

         def help(topRow,topCol,botRow,botCol):

             if topRow == botRow:#只有一行:

                 while topCol <=botCol:

                     res.append(matrix[topRow][topCol])

                     topCol+=1

             elif topCol == botCol:#只有一行

                 while topRow<=botRow:

                     res.append(matrix[topRow][topCol])

                     topRow+=1

             else:

                 curCol=topCol

                 curRow=topRow

                 while curCol<botCol:

                     res.append(matrix[topRow][curCol])

                     curCol+=1

                 while curRow<botRow:

                     res.append(matrix[curRow][botCol])

                     curRow+=1

                 while curCol>topCol:

                     res.append(matrix[botRow][curCol])

                     curCol-=1

                 while curRow>topRow:

                     res.append(matrix[curRow][topCol])

                     curRow-=1

         if len(matrix)==1:

             return matrix[0]

         res=[]

         topRow=0

         topCol=0

         botRow=len(matrix)-1

         botCol=len(matrix[0])-1

         while topRow<=botRow and topCol<=botCol:

             help(topRow,topCol,botRow,botCol)

             topRow+=1

             topCol+=1

             botRow-=1

             botCol-=1

         return res