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Proodle Hospitality Service Solutions Senior Data Scientist Interview Questions and Answers
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Anonymous
Interview Preparation Tips
Experience: 1. Rotate a matrix by 90 degrees clockwise.( He asked me have you heard of question.I said Yes.Then he asked me to code)2. Find vertical sum of nodes present in same vertical line in binary tree. ( He again asked me have you heard of question. I have heard it but didn’t remember the approach. It took some time and then I started telling my approach.He aasked me to write code and question regarding get sums from left to right , for which I made use of linked hashmap)
Overall It was very cool for me
Total Questions: 2
Round: Test
Experience: 1.Reverse K blocks of nodes in linked list.There are two interviewers this time, probably, guy was senior he was asking me question.He was very particular in coding. Checked every edge case.and asked me evrything.Initially I told the approach and then started coding.2.Find min in stack in O(1)Pretty straightforward written code.Again he checked all edge cases with my code.3. Then asked about counting sort and its code.4. And a simple question on array sorting.
Round: HR Interview
Experience: I thought this was last round as they have said like.She asked me about my strengths and challenges I faced.How I overcame through it1.Basic question on oops concepts.(runtime polymorphism).
2.Design tables for getting all employees under manager. I screwed it little bit.But some how I got answer which I was not satisfied as well.I was expecting result either yes/no.But they called me for another round of interview may be because of my expected salary which was high compared to my previous.
Round: Technical Interview
Experience: 1.Given “aaabbbccc” it should return “a3b3c3″ in place. Initially I explained brute force approach then he said array has 2n space.I was able to remember approach for quicksort and started explaining after which I grew confident on it.He was satisfied.Questions on time complexity of algo and space complexity discussions.2.Again a question on OOPs.This time I was completely wrong in answering it.I thought interview with yatra was closing for me.He was not satisified much with this.Luckily, there was another round with manager.
Round: Other Interview
Experience: 1.He asked me to find words which are having particular pattern.Then I said it was KMP algo. Can I explain it ?? I started explaining approach, may be he was busy with something, he asked me to write pseudo code.He left the room for 15 mins then he came back I had almost completed the code, which he was satisified.Some basic questions on spring ( my previous work was related to it). Then my expected salary and my position If I got selected in yatra were discussed.
College Name: NA
Interview Questionnaire
2 Questions
- Q1. What is you profession
- Ans.
I am a Senior Associate in the field of finance, specializing in investment management.
I have expertise in analyzing financial data and making investment recommendations.
I work closely with clients to understand their financial goals and risk tolerance.
I monitor market trends and economic indicators to make informed investment decisions.
I have experience in portfolio management and asset allocation.
I may hold certifica...
- Q2. What is your ambition
- Ans.
My ambition is to become a respected leader in my field, making a positive impact through innovative solutions and mentorship.
To continuously learn and grow in my role
To lead and inspire a team towards success
To contribute to the advancement of the organization and industry
To mentor and guide junior colleagues in their professional development
I applied via LinkedIn and was interviewed in Sep 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. How your work will increase our revenue? By sharing the data we can improve our services.
- Ans.
Sharing data insights can help improve services and identify revenue opportunities.
Analyzing customer behavior can help identify areas for improvement
Identifying trends in sales data can help optimize pricing strategies
Using data to personalize marketing efforts can increase customer engagement
Predictive modeling can help identify potential revenue opportunities
Tracking key performance indicators can help optimize busi
- Q2. Do you believe in the overtime if yes then why? I don believe in the rare cases we should help our team mates
Interview Preparation Tips
I applied via Walk-in and was interviewed before Jan 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. 5S Concepts at warehouse sector, FMCG and FNV operation
- Ans.
The 5S concepts are widely used in the warehouse sector, FMCG, and FNV operations to improve efficiency and organization.
Sort: Remove unnecessary items and organize the necessary ones.
Set in Order: Arrange items in a logical and efficient manner.
Shine: Clean and maintain the workplace regularly.
Standardize: Establish standardized processes and procedures.
Sustain: Continuously maintain and improve the 5S practices.
Interview Preparation Tips
I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.
(7 Questions)
- Q1. Explain Moving Average
- Ans.
Moving Average is a statistical technique used to analyze data points by creating a series of averages of different subsets of the full data set.
Moving Average helps in smoothing out fluctuations in data to identify trends over time.
It is calculated by taking the average of a specific number of data points within a defined window.
For example, a 3-day moving average for stock prices would be the average of the stock pri...
- Q2. Explain Decorators
- Ans.
Decorators in Python are functions that modify the behavior of other functions.
Decorators are denoted by the @ symbol followed by the decorator function name.
They allow you to add functionality to an existing function without modifying its code.
Common use cases include logging, timing, and authentication.
Example: @decorator_function def function_to_decorate(): pass
- Q3. Explain Object Oriented Programming
- Ans.
Object Oriented Programming is a programming paradigm based on the concept of objects, which can contain data and code.
OOP focuses on creating objects that interact with each other to solve complex problems.
Objects have attributes (data) and methods (functions) that can manipulate the data.
Encapsulation, inheritance, and polymorphism are key principles of OOP.
Example: In a car simulation program, a 'Car' object can hav...
- Q4. Explain classes objects
- Ans.
Classes are blueprints for creating objects in object-oriented programming.
Classes define the properties and behaviors of objects
Objects are instances of classes
Classes can inherit properties and behaviors from other classes
Classes can have constructors to initialize objects
Classes can have methods to perform actions
- Q5. Explain Functions
- Ans.
Functions are blocks of code that perform a specific task and can be reused multiple times in a program.
Functions help in organizing code and making it more modular.
They can take input parameters and return output values.
Functions can be called multiple times from different parts of the program.
Examples: summing two numbers, finding the maximum value in a list.
- Q6. Pandas and Numpy
- Q7. Swap L1 and L5 in a list
- Ans.
Swap L1 and L5 in a list
Create a temporary variable to store the value of L1
Assign the value of L5 to L1
Assign the value of the temporary variable to L5
Interview Preparation Tips
- Advanced Python
- Advanced SQL
- Advanced Excel
Skills evaluated in this interview
(1 Question)
- Q1. Sql, advance Excel formulas
(1 Question)
- Q1. Basics of android and java
Ds related questions
(1 Question)
- Q1. All Android (Java and kotlin)
(1 Question)
- Q1. Past projects,android,kotlin
(1 Question)
- Q1. About Salary discussion
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
SQL, excel, tableau , looker studio
(1 Question)
- Q1. What is your notice period.
Interview Questionnaire
2 Questions
- Q1. I interviewed for Qlikview Team, So most questions were regarding qlikview.
- Q2. Some questions were regarding SQL also.
Selected
I applied via Approached by Company and was interviewed in Dec 2022. There were 5 interview rounds.
(1 Question)
- Q1. Based on core concepts of JavaScript and React fundamentals.
(1 Question)
- Q1. Advance topics of React and JavaScript and easy and medium level of DS algo
(1 Question)
- Q1. More like technical discussion on services that helps them to manage their product and problem solving if discussion not go long.
(1 Question)
- Q1. Compensation and others formalities
Interview Preparation Tips
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