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CBSE AISSCE 2017-2018 Marking Scheme for Computer Science
(2018-2019 Sub Code: 083 Paper Code: 91)

( ½ mark for reading each element of the list using a loop)
( ½ mark for checking whether the value is ending with 0)
( ½ mark for adding it to the sum )
( ½ mark for printing or returning the value)

(c) Write AddClient(Client) and DeleteCleint(Client) methods in python to add a new 4
Client and delete a Client from a List of Client Names, considering them to act as
insert and delete operations of the queue data structure.
Ans def AddClient(Client):
C=raw_input("Client name: ")
Client.append(C)

def DeleteClient(Client):
if (Client==[]):
print "Queue empty"
else:
print Client[0],"Deleted"
del Client[0] # OR Client.pop(0)
OR
class queue:
Client=[]
def AddClient(self):
a=raw_input("Client name: ")
queue.Client.append(a)
def DeleteClient(self):
if (queue.Client==[]):
print "Queue empty"
else:
print queue.Client[0],"Deleted"
del queue.Client[0]

( ½ mark insert header)
( ½ mark for accepting a value from user)
( ½ mark for adding value in list)
( ½ mark for delete header)
( ½ mark for checking empty list condition)
( ½ mark for displaying “Queue empty”)
( ½ mark for displaying the value to be deleted)
( ½ mark for deleting value from list)

(d) Write definition of a Method COUNTNOW(PLACES) to find and display those place 2
names, in which there are more than 5 characters.
For example:

If the list PLACES contains
["DELHI","LONDON","PARIS","NEW YORK","DUBAI"]
The following should get displayed
LONDON
NEW YORK

Ans def COUNTNOW(PLACES):

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