Run a 3 wire cable between all the receptacles and the last receptacle and the switch.
Cut the tab between the gold screws on all the receptacles you want half switched.
At all the receptacles connect the whites to the silver screws. Connect the red and black to the gold screws using pigtails.
At the switch connect the red and black to the switch and cap the white.
Cut the tab between the gold screws on all the receptacles you want half switched.
At all the receptacles connect the whites to the silver screws. Connect the red and black to the gold screws using pigtails.
At the switch connect the red and black to the switch and cap the white.