PUZZLE 128 Rocket Reshuffle

These rockets are being tested out to see how they launch and land.
Each rocket can only move to a launching pad that is the same number of spaces away as the number displayed on itself.
It can fly over rockets in between, but it cannot land on a launching pad already containing a rocket.
Slide the rockets to position them in 3, 2, 1 order from left to right, without any gaps in between them.

Hint 1

Line the rockets up so that they are all on the right-hand side.

Hint 2

Try to work out a way to move rocket one to the launch pad on the extreme right.
First, move rocket three to the left.
Then move rocket two to the right so that rocket one has the space to move.

Hint 3

Continuing on from hint two...
As you keep moving rocket one to the right, it will end up next to rocket two and will not be able to move any more.
That is when you need to move rocket two to the left.

Super Hint

Continuing on from hint three...
When rocket one reaches the right-hand side of the launching area, you can move rocket two back to the right.
Then there is just one more step to complete.

Answer for 'Rocket Reshuffle'

The answer is as follows.

1. The '3' moves to left.
2. The '2' moves to right.
3. The '1' moves to right twice.
4. The '2' moves to left.
5. The '1' moves to right twice.
6. The '2' moves to right.
7. The '3' moves to right.