Task $2$: Manage two full lanes with the help with an empty spot, the bubble.

The possible moves of a bubble are illustrated below.

Code O $("$shift bubble to the Other lane"$)$:

Code L $("$shift bubble to the next Lower index$)$:

Code H $("$shift bubble to the next Higher index$)$:

def swap$\_$to$\_$front $($parking$\_$lane, service$\_$lane, car$)$:

Description: This function returns a list of move codes for the bubble to swap places with other

cars so that eventually the specified car shifts to the front of its lane.

Parameters: parking$\_$lane $($list of strings of the license plates or empty slot in the parking lane$)$

service$\_$lane $($list of strings of the license plates or empty slot in the service lane$)$

car $($str representing the license plate of the car that needs to be brought to the front$)$Assumptions: car is an element in one of the parking$\_$lane or service$\_$lane lists

parking$\_$lane and service$\_$lane have equal lengths

parking$\_$lane and service$\_$lane together do not contain any

duplicate strings

parking$\_$lane and service$\_$lane together contain the empty string

$\text{'}\text{'}$ in exactly one item.

Return value: A list $[$str$]$ representing the codes of bubble moves that bring

car to occupy the slot at index $0$ in the lane list that contains car.