search for: x1x2x3

Hello all ,  I have a data frame like this  X1X2X3 11815 22916 331017 441118 551219 661320 771421 now i want to randomly reorder the variable X2  but the row element should be same  as for example  X1X2X3 12916 251219 331017 471421 561320 61815 741118 how can i do that ?? Hint :  this could be helpful :  if X2 is only a vector like this  X2&lt...