comefrom: <qiyuangong>031_Next_Permutation_2.py
code: def re_order( a, start, end):
      for i in range(0, (end - start + 1) // 2):
          a[start + i], a[end - i] = a[end - i], a[start + i]
masked: def sample_funcname ( var_0 , var_1 , var_2 ) :
      for var_7 in range ( 0 , ( var_2 - var_1 + 1 ) // 2 ) :
          var_0 [ var_1 + var_7 ] , var_0 [ var_2 - var_7 ] = var_0 [ var_2 - var_7 ] , var_0 [ var_1 + var_7 ]
  