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(1 mark for applying condition to check if Queue is empty)
(½ mark for returning -1)
(1 mark for deleting the first element from the Queue)
(½ mark for returning the deleted value)
d) Write a generator function to generate odd numbers between a and b (including b).Note: 3
a and b are received as an argument by the function.
Ans:

(½ mark for correct function header)

(1 mark for correct use of loop)
( ½ mark for condition)
(1 mark for using yield() to yield the correct value)
(e) Evaluate the following postfix expression using a stack. Show the contents of stack after 2
execution of each operation:
10,40,25,-,*,15,4,*,+
Ans
Symbol Operation Stack Result

10 Push(10) 10

40 Push(40) 10,40

25 Push(25) 10,40,25

- Pop(25) 10,15
Pop(40)
Push(40-25)
=15

* Pop(15) 150
Pop(10)
Push(10*15)
=150

15 Push(15) 150,15

4 Push(4) 150,15,4

* Pop(4) 150,60
Pop(15)
Push(15*4)=60

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