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Python Interview Questions 16-20

Let’s start with the 4th set of Python Interview Questions. Mostly, the product-based companies in India ask these questions in the first round of interviews for Business Intelligence Engineer/Data Analyst/Business Analyst/Data Scientist



Python Interview Questions

16. Interchange first and last element in a list

l = [1,2,3,5,6]
temp = l[0]
l[0] = l[len(l)-1]
l[len(l)-1] = temp
print(l)

or

l = [4,5,6,7,8]
print("List",l)
def inter(l):
l[0],l[-1] = l[-1],l[0]
return l

print(“Interchanged List” , inter(l))

Python Interview Questions

17. Swap two positions in a list

p1 = 2
p2 = 5
l = [1,2,3,4,5,6,7]
print("Original List",l)
def swap(l,p1,p2):
l[p1],l[p2] = l[p2],l[p1]
return l
print("Swaped list", swap(l,p1,p2))
Python Interview Questions

18. To check if a particular element is there in the list

l = ['a','b','d']
count = l.count('d')
print(count)

or

l_set = set(l)
if 'b' in l_set:
print("Mil gaya")

or
Use a naive method of loop

for i in range(0,len(l)):
if l[i] == 'd':
print("Mil gaya at",i)
Python Interview Questions

19. Get the sum of elements in a list

l = [1,3,5,6]
s = 0
for i in range(0,len(l)):
s = s+l[i]
print(s)

or

list1 = [9,8,7,6]
def sumOfList(list, size):
if (size == 0):
return 0
else:
return list[size - 1] + sumOfList(list, size - 1)
total = sumOfList(list1, len(list1))
print("Sum of all elements in given list: ", total)
Python Interview Questions

20. Multiple all the numbers in a list

l = [1,3,5,6]
m = 1
for i in range(0,len(l)):
s = s*l[i]
print(s)
Python Interview Questions

The Data Monk Interview Books – Don’t Miss

Now we are also available on our website where you can directly download the PDF of the topic you are interested in. At Amazon, each book costs ~299, on our website we have put it at a 60-80% discount. There are ~4000 solved interview questions prepared for you.

10 e-book bundle with 1400 interview questions spread across SQL, Python, Statistics, Case Studies, and Machine Learning Algorithms – Ideal for 0-3 years experienced candidates

23 E-book with ~2000 interview questions spread across AWS, SQL, Python, 10+ ML algorithms, MS Excel, and Case Studies – Complete Package for someone between 0 to 8 years of experience (The above 10 e-book bundle has a completely different set of e-books)

12 E-books for 12 Machine Learning algorithms with 1000+ interview questions – For those candidates who want to include any Machine Learning Algorithm in their resume and to learn/revise the important concepts. These 12 e-books are a part of the 23 e-book package

Individual 50+ e-books on separate topics

Important Resources to crack interviews (Mostly Free)

There are a few things which might be very useful for your preparation

The Data Monk Youtube channel – Here you will get only those videos that are asked in interviews for Data Analysts, Data Scientists, Machine Learning Engineers, Business Intelligence Engineers, Analytics Manager, etc.
Go through the watchlist which makes you uncomfortable:-

All the list of 200 videos
Complete Python Playlist for Data Science
Company-wise Data Science Interview Questions – Must Watch
All important Machine Learning Algorithm with code in Python
Complete Python Numpy Playlist
Complete Python Pandas Playlist
SQL Complete Playlist
Case Study and Guesstimates Complete Playlist
Complete Playlist of Statistics

About TheDataMonkGrand Master

I am the Co-Founder of The Data Monk. I have a total of 6+ years of analytics experience 3+ years at Mu Sigma 2 years at OYO 1 year and counting at The Data Monk I am an active trader and a logically sarcastic idiot :)

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