Python - Lists, Tuples, Dictionaries practice tests with solutions
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Course
Computer Science (CSE)
Institution
Vellore Institute Of Technology
This document contains all the exam questions with solutions related to Functions in Lists, Tuples and Dictionaries in the python coding language
**Its recommended to solve the questions first and then compare with the official solutions.**
Problem Definition :
Define functions:
• REPLACE(L,N) – this function takes a list L containing integers and an
integer N as parameters and increases the value of all odd elements by N and
decreases the value of all even elements by N.
• EXCHANGE(L) – this function takes a list L containing integers and
exchanges the first half elements of the list with the second half. ( Note : - if
the list has 6 elements then exchange first 3 elements with the last 3
elements and in case the list has 7 elements then exchange first 3 elements
with the last 3 elements leaving the middle element untouched.)
Both the functions will not display the list but only perform the task
Write a menu driven program in python which displays a menu to the user and
depending upon the user’s choice invokes the above mentioned functions and
displays the modified list.
PROGRAM CODE:
def replace(l,n):
for i in l:
if i%2==1:
i+=n
else:
i-=n
print(i)
def exchange(l):
mid=len(l)//2
for i in range(0,mid):
l[i],l[mid+i]= l[mid+i],l[i]
print(l)
, while True:
print("""MENU:
1.ADD ODD AND SUBTRACT EVEN
2.REPLACES FIRST HALF WITH SECOND HALF
3.EXIT""")
ch=int(input('enter choice'))
if ch==1:
l=eval(input("Enter elements of ure choice"))
n=int(input("Enter even or odd"))
replace(l,n)
elif ch==2:
l=eval(input("Enter elements of ure choice"))
exchange(l)
elif ch==3:
break
print()
O/P:
MENU:
1.ADD ODD AND SUBTRACT EVEN
2.REPLACES FIRST HALF WITH SECOND HALF
3.EXIT
enter choice1
Enter elements of ure choice[5,9,6,7,2,6,4]
Enter even or odd9
-5
MENU:
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