comefrom: <doocs>0832.Flipping an Image_1.py
code: def flipAndInvertImage( A: List[List[int]]) -> List[List[int]]:
      m, n = len(A), len(A[0])
      for i in range(m):
          p, q = 0, n - 1
          while p < q:
              t = A[i][p] ^ 1
              A[i][p] = A[i][q] ^ 1
              A[i][q] = t
              p += 1
              q -= 1
          if p == q:
              A[i][p] ^= 1
      return A
masked: def sample_funcname ( var_0 : List [ List [ int ] ] ) -> List [ List [ int ] ] :
      var_4 , var_6 = len ( var_0 ) , len ( var_0 [ 0 ] )
      for var_8 in range ( var_4 ) :
          var_9 , var_11 = 0 , var_6 - 1
          while var_9 < var_11 :
              var_12 = var_0 [ var_8 ] [ var_9 ] ^ 1
              var_0 [ var_8 ] [ var_9 ] = var_0 [ var_8 ] [ var_11 ] ^ 1
              var_0 [ var_8 ] [ var_11 ] = var_12
              var_9 += 1
              var_11 -= 1
          if var_9 == var_11 :
              var_0 [ var_8 ] [ var_9 ] ^= 1
      return var_0
  