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COMPUTER SCIENCE: ASSIGNMENT – LIST

 

COMPUTER SCIENCE: ASSIGNMENT – LIST

CLASS XI

 

Q1. MCQ

1. What is the output of the following list function?

sampleList = [10, 20, 30, 40, 50]

sampleList.pop()

print(sampleList)

sampleList.pop(2)

print(sampleList)

a. [20, 30, 40, 50]

[10, 20, 40]

b. [10, 20, 30, 40]

[10, 20, 30, 50]

c. [10, 20, 30, 40]

[10, 20, 40]


2. What is the output of the following code

list1 = ['xyz', 'zara', 'PYnative']

print (max(list1))

a. PYnative

b. zara


3. What is the output of the following code

my_list = ["Hello", "Python"]

print("-".join(my_list))

a. HelloPython-

b. Hello-Python

c. -HelloPython


4. In Python, list is mutable

a. False

b. True


5. What is the output of the following list assignment

aList = [4, 8, 12, 16]

aList[1:4] = [20, 24, 28]

print(aList)

a. [4, 20, 24, 28, 8, 12, 16]

b. [4, 20, 24, 28]


6. Select all the correct options to join two lists in Python

listOne = ['a', 'b', 'c', 'd']

listTwo = ['e', 'f', 'g']

a. newList = listOne + listTwo

b. newList = extend(listOne, listTwo)

c. newList = listOne.extend(listTwo)

d. newList.extend(listOne, listTwo) 

 

7. What is the output of the following list operation

aList = [10, 20, 30, 40, 50, 60, 70, 80]

print(aList[2:5])

print(aList[:4])

print(aList[3:])

a. [20, 30, 40, 50]

[10, 20, 30, 40]

[30, 40, 50, 60, 70, 80]

b. [30, 40, 50]

[10, 20, 30, 40]

[40, 50, 60, 70, 80]


8. What is the output of the following list function?

sampleList = [10, 20, 30, 40, 50]

sampleList.append(60)

print(sampleList)

sampleList.append(60)

print(sampleList)

a. [10, 20, 30, 40, 50, 60]

b. [10, 20, 30, 40, 50, 60]

c. [10, 20, 30, 40, 50, 60]

d. [10, 20, 30, 40, 50, 60, 60]


9. What is the output of the following code

aList = ["PYnative", [4, 8, 12, 16]]

print(aList[0][1])

print(aList[1][3])

a. P 8

Y 16

b. P

12

c. Y

16


10. What is the output of the following

aList = [5, 10, 15, 25]

print(aList[::-2])

a. [15, 10, 5]

b. [10, 5]

c. [25, 10]


11. What will be the output?

values = [[3, 4, 5, 1], [33, 6, 1, 2]]

v = values[0][0]

for lst in values:

for element in lst:

if v > element:

v = element

print(v)

a. 1

b. 3

c. 5 

d. 6


12. What command is used to insert 6 in a list ‘‘L’’ at 3rd position ?

a. L.insert(2,6)

b. L.insert(3,6)

c. L.add(3,6)

d. L.append(2,6)


Q2.1 What will be the output of the following code snippet?

arr = [1, 2, 3, 4, 5, 6]

for i in range(1, 6):

arr[i - 1] = arr[i]

for i in range(0, 6):

print(arr[i], end = " ")

2. What will be the output of the following code snippet?

fruit_list1 = ['Apple', 'Berry', 'Cherry', 'Papaya']

fruit_list2 = fruit_list1

fruit_list3 = fruit_list1[:]

fruit_list2[0] = 'Guava'

fruit_list3[1] = 'Kiwi'

sum = 0

for ls in (fruit_list1, fruit_list2, fruit_list3):

if ls[0] == 'Guava':

sum += 1

if ls[1] == 'Kiwi':

sum += 20 

print (sum)


3. What will be the output of the following code snippet?

L = [2e-04, 'a', False, 87]

T = (6.22, 'boy', True, 554)

for i in range(len(L)):

if L[i]:

L[i] = L[i] + T[i]

else:

T[i] = L[i] + T[i]

break


4. What will be the output of the following code snippet?

L1 = [1, 1.33, 'GFG', 0, 'NO', None, 'G', True]

val1, val2 = 0, ''

for x in L1:

if(type(x) == int or type(x) == float):

val1 += x

elif(type(x) == str):

val2 += x

else:

break

print(val1, val2)


5. What will be the output of the following code snippet?

L = [1, 3, 5, 7, 9]

print(L.pop(-3), end = ' ')

print(L.remove(L[0]), end = ' ')

print(L) 


Q3. Program list

1. Write a Python program to sum all the items in a list.

2. Write a Python program to multiplies all the items in a list.

3. Write a Python program to get the largest number from a list.

4. Write a Python program to get the smallest number from a list.

5. Write a Python program to count the number of strings where the string length is 2 or more and the first and last character are same from a given list of strings.

Sample List : ['abc', 'xyz', 'aba', '1221']

Expected Result : 2

6. Write a Python program to remove duplicates from a list.

7. Write a Python program to find the list of words that are longer than n from a given list of words.

8. Write a Python program to print a specified list after removing the 0th, 4th and 5th elements.

Sample List : ['Red', 'Green', 'White', 'Black', 'Pink', 'Yellow']

Exp

ected Output : ['Green', 'White', 'Black']

9. Write a Python program to print the numbers of a specified list after removing even numbers from it.

10. Write a Python program to generate and print a list of first and last 5 elements where the values are square of numbers between 1 and 30 (both included).

11. Write a Python program to get the difference between the two lists.

12. Write a Python program to convert a list of characters into a string.

13. Write a Python program to find the index of an item in a specified list.

14. Write a Python program to append a list to the second list.

15. Write a Python program to find the second smallest number in a list.

16. Write a Python program to check whether a list contains a sublist.


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