comefrom: <qiyuangong>048_Rotate_Image_1.py
code: def rotate( matrix):
      if matrix is None or len(matrix) == 1:
          return
      ls = len(matrix)
      for i in range(ls / 2):
          begin, end = i, ls - 1 - i
          for k in range(ls - 2 * i - 1):
              temp = matrix[end - k][begin]
              matrix[end - k][begin] = matrix[end][end - k]
              matrix[end][end - k] = matrix[begin + k][end]
              matrix[begin + k][end] = matrix[begin][begin + k]
              matrix[begin][begin + k] = temp
      return
masked: def sample_funcname ( var_0 ) :
      if var_0 is None or len ( var_0 ) == 1 :
          return
      var_4 = len ( var_0 )
      for var_7 in range ( var_4 / 2 ) :
          var_8 , var_9 = var_7 , var_4 - 1 - var_7
          for var_10 in range ( var_4 - 2 * var_7 - 1 ) :
              var_11 = var_0 [ var_9 - var_10 ] [ var_8 ]
              var_0 [ var_9 - var_10 ] [ var_8 ] = var_0 [ var_9 ] [ var_9 - var_10 ]
              var_0 [ var_9 ] [ var_9 - var_10 ] = var_0 [ var_8 + var_10 ] [ var_9 ]
              var_0 [ var_8 + var_10 ] [ var_9 ] = var_0 [ var_8 ] [ var_8 + var_10 ]
              var_0 [ var_8 ] [ var_8 + var_10 ] = var_11
      return
  