The software is being further developed to store whether the whole party is present or not; party complete being

$0$ indicates the party is incomplete $($and so cannot yet be seated$),$ and party complete being $1$ indicates the party

is complete, and therefore can be seated when a table becomes available.

The code below implents this as a class. The as$\_$dict method can be used to return a dictionary of the bookings

which can be used for testing purposes.

In $[]$:

$\%$run $-$i m$269\_$array

class Bookings:

$"""$A dynamic array implementation

to store bookings.

$"""$

def $\_\_$init$\_\_($self$)$:

$"""$Create a new empty array.

$"""$

Write a problem definition for a function which returns a tuple with two values: the first being the count of

bookings with parties which are incomplete and the second being the count of bookings with parties which are

complete.

Write your answer here

Function: $\backslash$ Inputs: $\backslash$ Preconditions: $\backslash$ Output: $\backslash$ Postconditions:

Q$2($c$)(8$ marks$)$

The code below extends the Bookings class by adding a method which, for a given reservation ID$,$ will set the

party complete value to $1$ or $0$ if a party becomes complete or incomplete.

The code below creates a number of bookings, assigns each with an initial completeness status, and checks the

completeness status of one of them, then changes its completeness status, and checks it again.

self.bookings $=$ DynamicArray$(0)$

def add$\_$booking$($self$,$ reservation$\_$ID: int, name: str$,$ table: int$)->$ None:

$"""$Adds a booking to the array.

$"""$

size $=$ self.bookings.length$()$

self.bookings.resize$($size$+1)$

self.bookings.set$\_$item$($size$,($reservation$\_$ID$,$ name, table, $0))$

def get$\_$party$\_$complete$($self$,$ reservation$\_$ID: int$)->$ int:

$"""$Precondition: reservation$\_$ID exists.

$"""$

for index in range$($self$.$bookings.length$())$:

booking $=$ self.bookings.get$\_$item$($index$)$

if booking$[0]==$ reservation$\_$ID:

return booking$[3]$

def as$\_$dict$($self$)->$ None:

$"""$Returns dictionary version

of the bookings array.

$"""$

bookings $=$ dict$()$

for index in range$($self$.$bookings.length$())$:

booking $=$ self.bookings.get$\_$item$($index$)$

bookings$[$booking$[0]]=$ booking$[1],$booking$[2],$booking$[3]$

return bookings