AmbitionBox
Interview Questions
- Reviews
- Salaries
- Interview Questions
- About Company
- Benefits
- Jobs
- Office Photos
- Community
Add office photos
Filter interviews by
DUNNHUMBY IT SERVICES INDIA Interview Questions and Answers
DUNNHUMBY IT SERVICES INDIA Interview Experiences
7 interviews found
Pawan
(1 Question)
- Q1. DSA questions and python coding
(1 Question)
- Q1. Machine learning depth
Senior Data Scientist Interview Questions asked at other Companies
Anonymous
Python and ML questions
(1 Question)
- Q1. Python ML SQL DA
Data Scientist Interview Questions asked at other Companies
Selected
I applied via Campus Placement and was interviewed before Mar 2023. There were 2 interview rounds.
45 mins test on Logical thinking, Quants
(2 Questions)
- Q1. Steps to be followed in code to get answer for say 'what is the max spend of a customer in each region during a time period'
- Q2. Write a python function to remove duplicates from a list
- Ans.
Python function to remove duplicates from a list of strings
Use set() to remove duplicates from the list
Convert the set back to a list to maintain the order of elements
Example: def remove_duplicates(input_list): return list(set(input_list))
Interview Preparation Tips
- Python, SQL
Skills evaluated in this interview
Applied Data Scientist Interview Questions asked at other Companies
Selected
I applied via Naukri.com and was interviewed before Feb 2023. There was 1 interview round.
(1 Question)
- Q1. Sql,unix basics
Senior Engineer Interview Questions asked at other Companies
DUNNHUMBY IT SERVICES INDIA interview questions for popular designations
Selected
I applied via Naukri.com and was interviewed before Jul 2022. There were 5 interview rounds.
Hacker Rank python coding test
(1 Question)
- Q1. Sql , python based questions
(1 Question)
- Q1. SQL questions, Python questions basic
(1 Question)
- Q1. Salary Discussion, negotiation mainly.
Lead Data Scientist Interview Questions asked at other Companies
Selected
I applied via Walk-in and was interviewed before Mar 2022. There were 5 interview rounds.
Mcq test has been taken and there will be coding round as well.
(1 Question)
- Q1. Question Related with Python(language based questions), Unix and SQL will be asked.
(1 Question)
- Q1. Again depends on interviewer it might be technical or some puzzle can be asked.
(1 Question)
- Q1. Basic questions like why you want to join, why you decided to leave previous company etc.
Interview Preparation Tips
System Engineer Interview Questions asked at other Companies
Interview Questionnaire
1 Question
- Q1. Automation framework
Senior Test Engineer Interview Questions asked at other Companies
Top trending discussions
Interview questions from similar companies
Interview Questionnaire
3 Questions
- Q1. N a line where words are separated by spaces, , and capitalize first letter of the reversed word. Other letters of the word should be in small. Input : “how are you?” → Output: “Woh Era ?uoy”
- Ans.
The program capitalizes the first letter of each reversed word in a sentence.
Split the sentence into an array of words using space as a delimiter.
Reverse each word in the array and capitalize the first letter.
Join the modified words back into a sentence.
- Q2. He second question reduced to finding maximum weight matching in a bipartite graph. Not many people would have done this (maybe none)
- Q3. There are 2 sets of countries. One set will donate clothes (something of this sort) and anotherset will accept clothes. A country can be in only 1 of the sets. The amount of clothes donated is also given. ...
Interview Preparation Tips
Experience: There were about 20 MCQs (30 minutes) to be done after the coding section. MCQs were totally nonsense. Can be done in 10 mins.For coding section 60 mins. It was hosted on Hackerrank.
Duration: 90 minutes
Total Questions: 2
Round: Technical Interview
Experience: After this, selected candidates were interviewed that consists of 4 rounds and discussion was mostly on your CV and data structure problems.
General Tips: Be honest with your interviewer. If you are not comfortable in 1 topic, tell your interviewer honestly. Do well in other areas. Look for hints from the interviewer if you get stuck. They want to see how you approach a problem.
Skills: Algortihm, Data structure
College Name: IIT DELHI
Interview Questionnaire
2 Questions
- Q1. Little discussion on my project
- Q2. Given a chessboard and the initial position of horse. If “n” is the number of steps the horse can make then what is probability that it goes out of board ?
- Ans.
Probability of a horse going out of a chessboard in 'n' steps.
The total number of possible moves for a horse is 8.
The probability of going out of the board depends on the position of the horse.
For example, if the horse is at a corner, the probability of going out of the board is higher.
The probability can be calculated using combinatorics and geometry.
Interview Preparation Tips
Experience: They did not expect any code in this round. An algo or pseudo code is fine.
1) You are given 2 vessels with capacity M liters and N liters capacity and infinite supply of water. You need to find the minimum number of steps required to get P liters. Any of the below action is considered a step
a) Filling vessel with water
b) Emptying vessel
c) Pouring water from one vessel to another vessel.
2) Given n sets each containing m integers. You need to create MinDiff set by picking exactly 1 element from each set. The difference between the maximum and minimum elements in the MinDiff set should be minimum.
eg: for the sets {30, 20, 10, 40},{ 22, 33, 44, 99},{ 16, 17, 18, 19} min diff set is {19, 20, 22}. Max and min elements in MinDiff set are 22 and 19 and their difference is 3.
Round: Technical Interview
Experience: 1) you will be given the binary representation of the numbers in the form of 2D array.eg: r1- 00001
r2- 00100
r3- 01010
r4- 00110
r5- 00111 This means the elements are 1, 4, 10 , 6 and 7.
A number “n” is given. Let us say that n can be formed by doing bitwise OR operation on rows of given matrix. What is the minimum number of rows that needs to be deleted from the matrix so that “n” can never be formed by doing the OR of the rows.
If n is 14(01110) then it can be formed by doing r2|r3 or r3|r4. You can prevent n formation either by deleting {r2,r4} or {r3}. But {r3} has least number of elements so it is the required set.2) Find the average of mid 50% of elements in the running stream of integersI have not cleared round-II so no further questions.
College Name: IIT GANDHINAGAR
Interview Questionnaire
3 Questions
- Q1. Algorithms on arrays and strings (coding)
- Ans.
Algorithms for manipulating arrays and strings in coding
Use sorting algorithms like quicksort and mergesort for arrays
Use string manipulation functions like substring and replace for strings
Use dynamic programming for optimizing solutions to array and string problems
- Q2. Distributed Database Design
- Q3. Large scale Ad Server Design
- Ans.
Designing a large scale Ad Server
Use distributed systems for scalability
Implement caching for faster ad delivery
Ensure high availability and fault tolerance
Use real-time bidding for efficient ad placement
Implement fraud detection mechanisms
Ensure compliance with privacy regulations
Interview Preparation Tips
Experience: They tested on thought-process during design problems. What problems are with the current solution I suggested and how to improve it...
Tips: Hints from interviewer are very helpful
Keep talking while you are thinking
Skills: Algorithms, Thinking Skills, Coding
College Name: IIT KHARAGPUR
Skills evaluated in this interview
DUNNHUMBY IT SERVICES INDIA Interview FAQs
Some of the top questions asked at the DUNNHUMBY IT SERVICES INDIA interview -
Tell us how to improve this page.
DUNNHUMBY IT SERVICES INDIA Interviews By Designations
- DUNNHUMBY IT SERVICES INDIA Data Scientist Interview Questions
- DUNNHUMBY IT SERVICES INDIA Senior Engineer Interview Questions
- DUNNHUMBY IT SERVICES INDIA Applied Data Scientist Interview Questions
- DUNNHUMBY IT SERVICES INDIA System Engineer Interview Questions
- DUNNHUMBY IT SERVICES INDIA Senior Data Scientist Interview Questions
- DUNNHUMBY IT SERVICES INDIA Lead Data Scientist Interview Questions
- DUNNHUMBY IT SERVICES INDIA Senior Test Engineer Interview Questions
Interview Questions for Popular Designations
DUNNHUMBY IT SERVICES INDIA Interview Process
based on 7 interviews
Interview experience
Interview Questions from Similar Companies
DUNNHUMBY IT SERVICES INDIA Reviews and Ratings
based on 64 reviews
Rating in categories
|
Senior Engineer
18
salaries
|  ₹9.9 L/yr - ₹25.6 L/yr |
|
Lead Engineer
17
salaries
| ₹14.4 L/yr - ₹31 L/yr |
|
Data Engineer
15
salaries
| ₹7.5 L/yr - ₹19 L/yr |
|
Senior Data Engineer
14
salaries
| ₹10 L/yr - ₹17.5 L/yr |
|
Data Scientist
14
salaries
| ₹12 L/yr - ₹18.2 L/yr |
Epsilon
Denave
Smollan Group
Regalix
- Home >
- Interviews >
- DUNNHUMBY IT SERVICES INDIA Interview Questions
