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Cleartrip Applications Engineer Interview Questions and Answers

Updated 20 Feb 2024

Cleartrip Applications Engineer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Design a flight booking system with flight inventory and funds
  • Ans. 

    Design a flight booking system with flight inventory and funds

    • Create a database to store flight inventory including flight details, availability, and pricing

    • Implement a user interface for customers to search for flights, select seats, and make bookings

    • Incorporate a payment gateway for customers to pay for their bookings

    • Include a feature for managing funds, tracking payments, and generating invoices

    • Implement a notificat...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Cleartrip Applications Engineer interview:
  • Springboot
  • Java
  • Microservices
  • Design
Interview preparation tips for other job seekers - Prepare for building a microservice with in memory db

Skills evaluated in this interview

Interview questions from similar companies

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

  • Answered by AI
  • 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

Interview preparation tips for other job seekers - Stay cool and be optimistic.

I applied via Walk-in and was interviewed before Feb 2021. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Aptitude Test 
Round 3 - HR 

(1 Question)

  • Q1. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - easy to crack they will ask qestions
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
-
Result
No response

I was interviewed in Aug 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. Calculate no of rows after join
  • Ans. 

    Calculate the number of rows after joining two datasets.

    • Count the number of rows in each dataset

    • Perform the join operation

    • Count the number of rows in the resulting dataset

  • Answered by AI
  • Q2. Split person name in excel
  • Ans. 

    Use Excel's text to columns feature to split person names into separate columns.

    • Select the column containing the full names

    • Go to the Data tab and click on Text to Columns

    • Choose 'Delimited' and select the delimiter that separates the names (e.g. space)

    • Click Finish to split the names into separate columns

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Duration - 1hr, Mostly questions are from Excel and SQL ( But a little knowledge of R and Python is very useful) .For me, it's knowing the concepts and answering no codes were ask to write.

Round 2 - One-on-one 

(1 Question)

  • Q1. Basic 1-on-1 round with your manager/ or any senior from the company

I was interviewed before Feb 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 65 minutes
Round difficulty - Easy

There were 2 sections – 
Aptitude and Logical Reasoning and MCQ based on Java question ,C++, coding for 20 min and 45 min respectively.
Section A- Not very difficult to clear this round although less time was a problem.
Section B- It contains 15 multiple choice question on c/c++,java and 4 simple coding questions

  • Q1. 

    Cycle Detection in a Singly Linked List

    Determine if a given singly linked list of integers forms a cycle or not.

    A cycle in a linked list occurs when a node's next points back to a previous node in the ...

  • Ans. 

    Detect if a singly linked list forms a cycle by checking if a node's next pointer points back to a previous node.

    • Traverse the linked list using two pointers, one moving at double the speed of the other.

    • If the two pointers meet at any point, there is a cycle in the linked list.

    • Use Floyd's Cycle Detection Algorithm for O(N) time complexity and O(1) space complexity.

  • Answered by AI
Round 2 - Coding Test 

(3 Questions)

Round duration - 75 minutes
Round difficulty - Medium

It was an online coding test in which 3 coding question were given.

  • Q1. 

    Smallest Window Problem Statement

    Given two strings, S and X, your task is to find the smallest substring in S that contains all the characters present in X.

    Example:

    Input:
    S = "abdd", X = "bd"
    Outpu...
  • Ans. 

    Find the smallest substring in string S that contains all characters in string X.

    • Iterate through string S and keep track of characters in X found in a window

    • Use two pointers to maintain the window and slide it to find the smallest window

    • Return the smallest window containing all characters in X

  • Answered by AI
  • Q2. 

    Smallest Integer Not Representable as Subset Sum

    Given a non-decreasing sorted array ARR of N positive numbers, determine the smallest positive integer that cannot be expressed as the sum of elements from...

  • Ans. 

    Find the smallest positive integer that cannot be expressed as the sum of elements from any proper subset of a non-decreasing sorted array of positive numbers.

    • Start with the smallest possible integer that cannot be represented, which is 1.

    • Iterate through the array and update the smallest integer that cannot be represented.

    • If the current element is greater than the smallest integer that cannot be represented, return tha...

  • Answered by AI
  • Q3. 

    Minimum Steps for a Knight to Reach Target

    Given a square chessboard of size 'N x N', determine the minimum number of moves a Knight requires to reach a specified target position from its initial position...

  • Ans. 

    Calculate the minimum number of moves a Knight needs to reach a target position on a chessboard.

    • Implement a function that takes knight's starting position, target position, and chessboard size as input

    • Use breadth-first search algorithm to find the shortest path for the Knight

    • Consider all possible 8 movements of the Knight on the chessboard

    • Return the minimum number of moves required for the Knight to reach the target po

  • Answered by AI
Round 3 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Easy

It started with a discussion on the programs given in coding round. They asked me about my interest field after that they directly jumped into Networking, Linux and Ethical Hacking part looking my interest domain. They asked me various question on networking and linux.
Then they asked me to code a simple c program

  • Q1. 

    Reverse Linked List Problem Statement

    Given a singly linked list of integers, return the head of the reversed linked list.

    Example:

    Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
    Reversed link...
  • Ans. 

    Reverse a singly linked list of integers and return the head of the reversed linked list.

    • Iterate through the linked list and reverse the pointers to point to the previous node.

    • Keep track of the current, previous, and next nodes while reversing the linked list.

    • Update the head of the reversed linked list as the last node encountered during reversal.

  • Answered by AI
  • Q2. What are the port numbers of protocols such as FTP and SMTP?
  • Ans. 

    FTP uses port number 21 and SMTP uses port number 25.

    • FTP uses port 21 for data transfer and port 20 for control information.

    • SMTP uses port 25 for email communication.

    • Understanding port numbers is important for network communication.

  • Answered by AI
  • Q3. Can you explain the OSI Model?
  • Ans. 

    The OSI Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

    • The OSI Model stands for Open Systems Interconnection Model.

    • It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

    • Each layer has specific functions and communicates with the adjacent layers.

    • Example: Layer 1 (Physical) deals with physi...

  • Answered by AI
  • Q4. How do you copy files in Linux?
  • Ans. 

    To copy files in Linux, you can use the 'cp' command.

    • Use the 'cp' command followed by the source file and destination directory to copy a file.

    • To copy a directory and its contents, use the '-r' flag with the 'cp' command.

    • You can also use wildcards like '*' to copy multiple files at once.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMakeMyTrip interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview Questionnaire 

8 Questions

  • Q1. Find out the subset of an array of continuous positive numbers from a larger array whose sum of of the elements is larger in comparision to other subset. eg: {1,2 5 -7, 2 5} .The two subarrays are {1,2,5} ...
  • Ans. 

    Find the subset of an array with the largest sum of continuous positive numbers.

    • Iterate through the array and keep track of the current sum and the maximum sum seen so far.

    • If the current element is positive, add it to the current sum. If it is negative, reset the current sum to 0.

    • Also keep track of the start and end indices of the maximum sum subset.

    • Return the subset using the start and end indices.

  • Answered by AI
  • Q2. Given two classes C1 and C2 which are almost same.(remember not exactly same). You want to choose best among these classes so that it can be use as key in hashmap. What question will you ask regarding two ...
  • Q3. You are given two strings s1 and s2.Now, find the smallest substring in s1 containing all characters of s2
  • Ans. 

    Find smallest substring in s1 containing all characters of s2.

    • Create a hash table of characters in s2

    • Use sliding window technique to find smallest substring in s1

    • Check if all characters in s2 are present in the substring

    • Update the smallest substring if a smaller one is found

  • Answered by AI
  • Q4. Questions on OOPS (almost all the concepts were covered like polymorphism, overriding, overloading, inheritance, concept of virtual fxns etc.)
  • Q5. Write algo for reversing a linked list
  • Ans. 

    Algorithm to reverse a linked list

    • Create a new empty linked list

    • Traverse the original linked list and insert each node at the beginning of the new list

    • Return the new list

  • Answered by AI
  • Q6. What is lazy loading? Advantages and disadvantages of the same?
  • Ans. 

    Lazy loading is a technique used to defer the loading of non-critical resources until they are needed.

    • Advantages: faster initial page load, reduced bandwidth usage, improved user experience

    • Disadvantages: increased complexity, potential for slower subsequent page loads, difficulty with SEO

    • Examples: images, videos, and other media files can be loaded only when they are visible on the screen

  • Answered by AI
  • Q7. How ajax works? Difference between angular js and jquery?
  • Ans. 

    Ajax is a technique for creating fast and dynamic web pages. AngularJS is a framework for building dynamic web applications, while jQuery is a library for simplifying HTML DOM traversal and manipulation.

    • Ajax stands for Asynchronous JavaScript and XML

    • It allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes

    • AngularJS is a JavaScript framework that extends HTML with new attrib...

  • Answered by AI
  • Q8. Design a traffic light system?
  • Ans. 

    A traffic light system controls the flow of traffic at intersections.

    • The system consists of three lights: red, yellow, and green.

    • Each light has a specific duration for which it stays on.

    • The system also includes sensors to detect the presence of vehicles and pedestrians.

    • The duration of each light can be adjusted based on traffic patterns.

    • The system can be connected to a central control system for remote monitoring and m

  • Answered by AI

Interview Preparation Tips

Skills: Javascript, Ajax, Angular JS, Jquery
College Name: na

Skills evaluated in this interview

I was interviewed before Feb 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical round with 3 problems based on DSA and Algorithms.

  • Q1. 

    Smallest Integer Not Representable as Subset Sum

    Given a non-decreasing sorted array ARR of N positive numbers, determine the smallest positive integer that cannot be expressed as the sum of elements from...

  • Ans. 

    Find the smallest positive integer that cannot be expressed as the sum of elements from any proper subset of a given array.

    • Sort the array in non-decreasing order.

    • Iterate through the array and keep track of the smallest sum that can be formed.

    • If the next element in the array is greater than the current sum + 1, then the answer is the current sum + 1.

    • Return the answer as the smallest integer not representable as a subset

  • Answered by AI
  • Q2. 

    Reverse Linked List Problem Statement

    Given a singly linked list of integers, return the head of the reversed linked list.

    Example:

    Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
    Reversed link...
  • Ans. 

    Reverse a singly linked list of integers and return the head of the reversed linked list.

    • Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.

    • Use three pointers to keep track of the current, previous, and next nodes while reversing the linked list.

    • Update the head of the reversed linked list to be the last node encountered during the reversal process.

  • Answered by AI
  • Q3. 

    Smallest Window Problem Statement

    Given two strings S and X containing random characters, the task is to find the smallest substring in S which contains all the characters present in X.

    Input:

    The first...
  • Ans. 

    The task is to find the smallest substring in string S which contains all the characters present in string X.

    • Iterate through string S and keep track of characters in X using a hashmap

    • Use two pointers to maintain a sliding window and find the smallest window containing all characters in X

    • Return the smallest window found

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 60 minutes
Round difficulty - Easy

Technical round with questions based on OOPS and Angular.

  • Q1. What are the different OOP concepts?
  • Ans. 

    OOP concepts include inheritance, encapsulation, polymorphism, and abstraction.

    • Inheritance allows a class to inherit properties and behavior from another class.

    • Encapsulation restricts access to certain components of an object, protecting its integrity.

    • Polymorphism allows objects to be treated as instances of their parent class.

    • Abstraction hides the complex implementation details of an object and only shows the necessar

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Questions based on System Design, ajax, jquery were asked.

  • Q1. How would you design a traffic light system?
  • Ans. 

    Designing a traffic light system involves creating a system that controls the flow of traffic at intersections.

    • Divide the traffic light system into three main lights: red, yellow, and green.

    • Implement timers to control the duration of each light.

    • Include sensors to detect the presence of vehicles and pedestrians.

    • Consider implementing a pedestrian crossing signal.

    • Integrate a central control system to coordinate the timing

  • Answered by AI
  • Q2. How does AJAX work?
  • Ans. 

    AJAX allows for asynchronous communication between client and server without needing to reload the entire page.

    • AJAX stands for Asynchronous JavaScript and XML.

    • It allows for sending and receiving data from a server without reloading the entire page.

    • AJAX uses XMLHttpRequest object to make requests to the server.

    • It can update parts of a web page without requiring a full page reload.

    • Commonly used in web applications to pro

  • Answered by AI
  • Q3. What is the difference between AngularJS and jQuery?
  • Ans. 

    AngularJS is a full-fledged MVC framework for building dynamic web applications, while jQuery is a lightweight library for DOM manipulation and event handling.

    • AngularJS is a full-fledged MVC framework, providing features like two-way data binding, dependency injection, and routing.

    • jQuery is a lightweight library primarily used for DOM manipulation and event handling.

    • AngularJS is suitable for building single-page applic...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMakeMyTrip interview preparation:Topics to prepare for the interview - Javascript, Ajax, Angular JS, Jquery, Data Structures, Algorithms, System Design, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewRejected

Skills evaluated in this interview

Interview Preparation Tips

Round: Technical Interview
Experience: The interviewers were professional in their approach and ensured that I was comfortable through the whole process.

General Tips: Interview process was fairly fast but a bit heavy. There were 4 technical interviews and 1 HR. It turns out to be not too difficult as some questions are duplicated in all the interviews.
Skills: Algorithm, data structure
College Name: na

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 75 minutes
Round difficulty - Easy

This was the online round held at university. All students who met the eligibility criteria were called for the online test on hackerrank.

  • Q1. 

    Anagram Difference Problem Statement

    Given two strings, 'STR1' and 'STR2', of equal lengths, determine the minimum number of manipulations required to make the two strings anagrams of each other.

    Input:

    ...
  • Ans. 

    The problem involves finding the minimum number of manipulations required to make two strings anagrams of each other.

    • Create frequency maps for both strings

    • Find the absolute difference in frequencies of each character

    • Sum up the absolute differences to get the total manipulations needed

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 90 Minutes
Round difficulty - Medium

This round was technical round and the interview started with formal introduction and general questions.
After that We had a discussion on LRU Cache.
Followed by coding and set of data structure questions.

  • Q1. 

    Gas Tank Problem Statement

    You have a car with a gas tank of infinite capacity. There are 'N' gas stations located along a circular route, numbered from 0 to N-1. You begin your journey with an empty tank...

  • Ans. 

    Find the starting gas station index to complete a circular route with gas and cost arrays.

    • Iterate through gas stations, keeping track of total gas and total cost from each station

    • If total gas is greater than or equal to total cost, update the starting station index

    • Return the starting station index if a valid one is found, else return -1

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 90 minutes
Round difficulty - Medium

This Round was DS and Algo round and it started with formal introduction, followed by 2 problems. We first dicussed the approach the time complexity and proper code covering all cases.

  • Q1. 

    Boundary Traversal of Binary Tree

    Given a binary tree of integers, your task is to print the boundary nodes of this binary tree in an anti-clockwise direction starting from the root node.

    Input:

    The fir...
  • Ans. 

    Print the boundary nodes of a binary tree in an anti-clockwise direction starting from the root node.

    • Traverse the left boundary nodes from the root to the leftmost leaf node.

    • Traverse the leaf nodes from left to right.

    • Traverse the right boundary nodes from the rightmost leaf node to the root.

  • Answered by AI
  • Q2. 

    Maximum Sum of Two Non-Overlapping Subarrays

    Given an integer array ARR and a positive integer K, your objective is to find two non-overlapping subarrays (contiguous) of length K each, such that their sum...

  • Ans. 

    Find two non-overlapping subarrays of length K with maximum sum in an integer array.

    • Iterate through the array to find all possible subarrays of length K.

    • Calculate the sum of each pair of non-overlapping subarrays of length K.

    • Keep track of the maximum sum obtained from the pairs of subarrays.

  • Answered by AI
Round 4 - HR 

Round duration - 30 minutes
Round difficulty - Easy

This was the Final Interview and it started with formal introduction and general HR questions. Then We discussed about the projects and the things written in my resume. The interviewer was very frank and this round was very interactive. He asked me about my college, my future plans, teachers, various subjects, why Expedia and questions like that.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in DelhiEligibility criteriaAbove 7.5 CGPA, Candidates from computer related branch only.Expedia Group interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Designs, Operating Systems, DBMSTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Be solid with the basics of Ds & Algorithms. Good to have end to end projects which are hosted on cloud.
Tip 2 : Its always good to be presentable and have good communications skills
Tip 3 : Be honest, clear in approach and always walkthrough your thought process to the interviewer

Application resume tips for other job seekers

Tip 1: Mention your projects and experience at the top. Be clear on what was done, a brief on how it was done, language /tech stack involved. If possible try to host and make it accessible. You never know if you can present it with just one click.
Tip 2: Choose a balance between, white spaces and text, it should be well indented, no grammatical errors.
Tip 3: It takes less than 2 min to scan a resume. Don't mention things which are irrelevant.

Final outcome of the interviewSelected

Skills evaluated in this interview

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Cleartrip Interview FAQs

How many rounds are there in Cleartrip Applications Engineer interview?
Cleartrip interview process usually has 1 rounds. The most common rounds in the Cleartrip interview process are Technical.

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Cleartrip Applications Engineer Interview Process

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