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Carwale Interview Questions, Process, and Tips
Top Carwale Interview Questions and Answers
- Q1. A string is given consisting of lowercase alphabets. Write a function which returns yes if the string has all the lowercase letters appearing in it at least once. O(N) ti ...read moreasked in SDE (Software Development Engineer) interview
- Q2. given two arrays that one array consists of the arrival time of trains and the other one consists of the departure time of trains. find out the minimum number of platform ...read moreasked in Software Developer interview
- Q3. What can be done to balance the load of requests coming to a single serverasked in Associate Software Engineer interview
Carwale Interview Experiences
41 interviews found
SDE (Software Development Engineer) Interview Questions & Answers
Rahul Kushwaha
posted on 30 Aug 2016
I was interviewed in Jan 2016.
Interview Questionnaire
16 Questions
- Q1. Based on project. What is difference between REST and SOAP? And couple of other questions
- Q2. Delete nodes in linkedlist which have a greater value on right side?
- Ans.
Delete nodes in linkedlist with greater value on right side
Traverse the linked list from right to left
Compare each node with the maximum value seen so far
If the current node has a greater value, delete it
Update the maximum value seen so far
- Q3. Check if given tree is BST or not?
- Ans.
Check if given tree is BST or not
A binary tree is a BST if the value of each node is greater than all the values in its left subtree and less than all the values in its right subtree
Perform an in-order traversal of the tree and check if the values are in ascending order
Alternatively, for each node, check if its value is within the range defined by its left and right subtrees
- Q4. One adhoc question on strings?
- Q5. One adhoc question from the online test itself? Ask me how i approached this problem and ask me to write code and explain?
- Q6. What is OOP? Describe its properties?
- Ans.
OOP is a programming paradigm that organizes code into objects with properties and behaviors.
OOP stands for Object-Oriented Programming.
It focuses on creating reusable code by organizing it into objects.
Objects have properties (attributes) and behaviors (methods).
Encapsulation, inheritance, and polymorphism are key principles of OOP.
Example: In Java, a class represents an object with its properties and methods.
- Q7. What is runtime polymorphism and compile time polymorphism? Difference between them?
- Ans.
Runtime polymorphism is when the method to be executed is determined at runtime, while compile-time polymorphism is determined at compile-time.
Runtime polymorphism is achieved through method overriding.
Compile-time polymorphism is achieved through method overloading.
Runtime polymorphism is also known as dynamic polymorphism.
Compile-time polymorphism is also known as static polymorphism.
Runtime polymorphism is associate...
- Q8. What are virtual functions?
- Ans.
Virtual functions are functions in a base class that can be overridden by derived classes to provide different implementations.
Virtual functions are declared in a base class and can be overridden in derived classes.
They allow polymorphism, where a pointer to a base class can invoke different derived class implementations.
Virtual functions are resolved at runtime based on the actual object type.
They are used to achieve
- Q9. What is abstract class?
- Ans.
An abstract class is a class that cannot be instantiated and is meant to be subclassed.
An abstract class can have both abstract and non-abstract methods.
It can provide a common interface for its subclasses.
Subclasses of an abstract class must implement all the abstract methods.
Abstract classes can have constructors.
An abstract class cannot be instantiated directly, but its subclasses can be.
- Q10. What is inheritance? What are diffence types of inheritance?
- Ans.
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
Inheritance allows code reuse and promotes code organization.
There are different types of inheritance: single inheritance, multiple inheritance, multilevel inheritance, hierarchical inheritance, and hybrid inheritance.
Single inheritance involves a class inheriting from a single base class.
Multipl...
- Q11. Ask me about my coding experience how i started since i was from non IT Branch?
- Q12. Print fibonaaci series less than equal to 1000?
- Ans.
Print Fibonacci series less than or equal to 1000.
Start with two variables, a and b, initialized to 0 and 1 respectively.
Print a and update a to the value of b, and b to the sum of the previous a and b.
Repeat until a exceeds 1000.
- Q13. In the above question calculate sum of only even numbers of fibonaaci series?
- Ans.
The sum of even numbers in the Fibonacci series is calculated.
Generate the Fibonacci series up to a given limit
Iterate through the series and check if each number is even
If the number is even, add it to the sum
Return the sum of the even numbers
- Q14. Optimized the above solution less than O(n). For this you have to think out of the box
- Q15. What are stacks and its properties?
- Ans.
Stacks are a data structure that follows the Last-In-First-Out (LIFO) principle.
Stacks have two main operations: push (adds an element to the top) and pop (removes the top element).
Stacks can be implemented using arrays or linked lists.
Common applications of stacks include function call stack, undo/redo operations, and expression evaluation.
Example: A stack of books, where the last book placed is the first one to be re
- Q16. Now implement one extra funtion called max() with give the maximum of all elements in the above stack with optimized time and space complexity?
- Ans.
Implement max() function to find the maximum element in a stack with optimized time and space complexity.
Use an additional stack to keep track of the maximum element at each step.
When pushing an element onto the stack, compare it with the top element of the maximum stack and push the larger one.
When popping an element from the stack, also pop the top element from the maximum stack if they are equal.
The top element of t...
Interview Preparation Tips
Experience: There were 4 questions of varying difficulty. Those attempted atleast 2 were selected for the next round.
Q1) Question based on Tower of hanoi problem. I solved it using dynamic programming.
Q2) Check for balanced parenthesis in an expression.
Q3)One adhoc question to calculate the maximum number of people present at a particular time in a hotel.
Q4) One other question based on string algorithms.
two adhoc questions
Tips: Lead in this round can benefit you in next rounds, so give your best shot
Total Questions: 4
Round: Technical Interview
Experience: The interviewer asked to write the full code for a couple of questions only
Tips: Prepare DS nicely.
Strong OOPs concepts.
They want optimized solution of all.
Be honest with your interviewer.
Don't pretend.
Round: Other Interview
Experience: Ask me write and compile the codes.
The interviewer was very friendly and helping nature.
He was giving hints where i stuck.
He was checking my thinking and prolem solving capability.
Tips: Correct explaination matters,time doesn't.Take your time.
Ask fro hint.
Be yourself.Don't pretend.
All the best :)
Skill Tips: Have conceptual knowledge of subjects, don't just mug up things. Interviewers are smart enough to make it out anyway.
Skills: C++, Object Oriented Programming, Algorithms And Data Structures, Ability To Think
College Name: NIT Allahabad
Motivation: Flat hierarchy.
Good progress by the company in its last 10 years of expansion.
opportunity to work with best minds of the country.
Decent salary.
Skills evaluated in this interview
Top Carwale SDE (Software Development Engineer) Interview Questions and Answers
SDE (Software Development Engineer) Interview Questions asked at other Companies
Anonymous
Selected
I applied via Campus Placement and was interviewed in Aug 2024. There were 3 interview rounds.
Array , String, stack , queue - Basic Easy to medium level
(2 Questions)
- Q1. What happen when we visit Url
- Ans.
When we visit a URL, the browser sends a request to the server hosting the website, which then responds with the requested web page.
Browser sends a request to the server hosting the website
Server processes the request and responds with the requested web page
Web page is displayed in the browser for the user to interact with
- Q2. Difference B/w Http and https
- Ans.
HTTP is a protocol used for transferring data over the internet, while HTTPS is a secure version of HTTP that encrypts data.
HTTP stands for Hypertext Transfer Protocol, used for transmitting data over the internet.
HTTPS stands for Hypertext Transfer Protocol Secure, which adds a layer of security by encrypting data.
HTTP operates on port 80, while HTTPS operates on port 443.
HTTPS uses SSL/TLS certificates to establish a...
(2 Questions)
- Q1. Journey through school life till now
- Ans.
I have always been a dedicated student, excelling in academics and extracurricular activities.
Consistently achieved top grades in all subjects
Participated in various school competitions and won awards
Served as a class representative and organized events
Took part in sports teams and cultural activities
- Q2. Tell everything and also mention achievement you received
Interview Preparation Tips
Skills evaluated in this interview
Sdet Automation Test Engineer Interview Questions asked at other Companies
Selected
I applied via Campus Placement and was interviewed in Jul 2024. There were 4 interview rounds.
4 questions on codebyte platform
1 easy combination sum
2. medium spiral traversal
3. medium question based on backtracking
4. medium to hard question based on anagrams
(1 Question)
- Q1. Find element in rotated sorted array
- Ans.
Use binary search to find the target element in a rotated sorted array.
Perform binary search to find the pivot element where the array is rotated.
Based on the pivot element, determine which half of the array to search for the target element.
Continue binary search in the appropriate half of the array to find the target element.
(1 Question)
- Q1. In depth questions on core concepts, system design questions, resume deep dive
(1 Question)
- Q1. Tech+HR questions
Interview Preparation Tips
Skills evaluated in this interview
Full Stack Developer Interview Questions asked at other Companies
I applied via Campus Placement
90 mins, easy, Data structures and algorithm basics
(1 Question)
- Q1. Given an array, remove all duplicates in place
- Ans.
Remove duplicates from array of strings in place
Use a HashSet to keep track of unique elements
Iterate through the array and remove duplicates by checking if element is already in the HashSet
Update the array in place by shifting elements to fill in the removed duplicates
(1 Question)
- Q1. Caching and its uses
- Ans.
Caching is the process of storing data in a temporary location to reduce access time and improve performance.
Caching helps reduce the load on servers by serving frequently accessed data quickly
It can improve performance by reducing the time needed to retrieve data from the original source
Examples include browser caching, CDN caching, and database caching
(1 Question)
- Q1. Personality grading
Skills evaluated in this interview
Top Carwale Software Developer Interview Questions and Answers
Software Developer Interview Questions asked at other Companies
Carwale interview questions for popular designations
2 hours coding round, only 1 person out of 90 cleared
(1 Question)
- Q1. Asked loads of dsa, super technical questions
Software Engineer Interview Questions asked at other Companies
Get interview-ready with Top Carwale Interview Questions
Selected
I applied via Referral and was interviewed in Apr 2024. There was 1 interview round.
(2 Questions)
- Q1. Experience and field Knowledge
- Q2. Roles and responsibilities
Interview Preparation Tips
Accounts Manager Interview Questions asked at other Companies
Jobs at Carwale
4 dsa questions were asked in online coding round.
Associate Engineer Interview Questions asked at other Companies
DSA question asked in the coding test.
Associate Engineer Interview Questions asked at other Companies
Selected
I applied via Campus Placement and was interviewed in Jul 2023. There were 5 interview rounds.
There were 4 questions, CoderByte was the platform used.
1st: Hard: Array: Search GFG for "Maximum size rectangle binary sub-array with all 1s"
2nd: Medium: Search: Longest Palindrome Substring
3rd: Easy: String: Search LEET for "Largest Substring between two equal characters." There was one more condition - the substring should have unique characters.
4th: Easy: String: Given a string, of characters, If "M" is encountered, remove "M" and duplicate the last small case letter. If "N" is encountered, remove "N" and discard the next character.
(3 Questions)
- Q1. This round was supposed to be based on DSA. What is Time Complexity? Give examples.
- Q2. What will be the time complexity to add an element to the Singly Linked List? Note* there are 2 types to add an element: 1st: to add at the end using Tail pointer so O(1) 2nd: to add anywhere in the middle...
- Ans.
Time complexity to add an element to a Singly Linked List is O(1) if added at the end using Tail pointer, and O(n) if added anywhere in the middle.
Adding an element at the end of a Singly Linked List using the Tail pointer is a constant time operation, hence O(1).
Adding an element anywhere in the middle of a Singly Linked List requires traversing the list to find the insertion point, resulting in a time complexity of O...
- Q3. Given an array of numbers, find the smallest Prime Number. I had to write down the whole code.
(4 Questions)
- Q1. This round was supposed to be System Designs. Asked me about my Web Projects. I Implemented roles. So, how did manage my DB side? How did I give access to certain roles? How to optimize my DB? If I were ...
- Q2. Database Designs. They asked me to draw some schema from my project, related to the above questions. Optimize it. They asked me what are Indexes. Query to be returned in O(n). So how will you do this?
- Q3. React What's the difference between using NextJs and ReactJs? Routing in NextJs. VDOM? Event Listeners. Some Hooks in NextJs.
- Ans.
NextJs is a framework built on top of ReactJs, providing server-side rendering and other features for easier development.
NextJs is a framework built on top of ReactJs, providing server-side rendering, routing, and other features for easier development.
ReactJs is a JavaScript library for building user interfaces, while NextJs is a framework that adds functionality like server-side rendering and routing to React applicat...
- Q4. JSON How to optimize JSON? Wrote a Py code to convert optimized JSON into normal JSON. An alternative method of storing JSON data in another DS
- Ans.
Optimizing JSON involves minimizing redundant data, using efficient data structures, and compressing data when necessary.
Minimize redundant data by using references or IDs instead of repeating the same information multiple times.
Use efficient data structures like arrays or dictionaries to store JSON data in a more organized and accessible way.
Compress JSON data using techniques like gzip or deflate to reduce file size ...
(7 Questions)
- Q1. Tell me about yourself.
- Q2. Technical Qualities. Professional Qualities.
- Q3. Some negative points about it
- Q4. Personal and Family Background.
- Q5. Academic history. Achievements and Lows during Primary and Secondary school.
- Q6. Plan for Higher studies. I said Yes. It is generally said to tell NO even if you have plans. But considering my prior responses they selected me.
- Q7. Commuting to work by train?
- Ans.
Yes, I prefer commuting to work by train for its reliability and eco-friendliness.
I find commuting by train to be more reliable than other modes of transportation, as it is not affected by traffic congestion.
Taking the train is also more eco-friendly compared to driving a car, as it reduces carbon emissions.
Commuting by train allows me to relax, read, or work during the journey, making it a productive use of time.
Interview Preparation Tips
For Technical 1, DSA is a must, know your basics. While optimizing a particular problem, try to use Hashmap.
For Technical 2, Know your project very well, If you have not contributed to your project, and if you are not eager to learn about it, then you are doomed for rejection. So learn about it.
And you always know that there is a certain part of the project which you could have designed well, So study about it, because they will ask you to optimize it.
For HR, be true and honest about yourself.
Skills evaluated in this interview
Full Stack Web Developer Interview Questions asked at other Companies
I applied via Campus Placement and was interviewed in Jul 2023. There were 4 interview rounds.
4 coding questions. 1 easy, 2 medium, 1 hard.Try to solve 3 out of them.
(2 Questions)
- Q1. DSA based interview round.
- Q2. Simple array and stack related questions were asked.
(2 Questions)
- Q1. Detailed questions based on your projects,
- Q2. Questions related to MERN as I have done a MERN project in past.
Interview Preparation Tips
Full Stack Developer Interview Questions asked at other Companies
Selected
I applied via Campus Placement and was interviewed in Jun 2023. There were 4 interview rounds.
4 questions :- 3 were string based and one DP
1. characters and it's frequency were given in key value format in a string, print the total frequency of each character in lexicographical order.
2. Minimum Jump to reach end of the array(search Jump game from leetcode)
3. Partion the given string into 2 parts such that both parts are present in list of words provided. Print all the ways of partitioning.
(2 Questions)
- Q1. 1.Find next greater element for each element in the given array of integers
- Ans.
Use stack to find next greater element for each element in the array
Create an empty stack to store indices of elements
Iterate through the array and for each element, pop elements from stack until finding a greater element
Store the next greater element in a result array
- Q2. 2.In an array, find triplets such that their sum is 0.
- Ans.
Use three pointers to find triplets with sum 0 in an array.
Sort the array first to easily find triplets.
Use three pointers - one fixed, one moving from left, one moving from right.
Check if the sum of the three pointers is 0, if not adjust pointers accordingly.
(1 Question)
- Q1. Questions regarding projects and system design questions.
(1 Question)
- Q1. Family background, questions about project, work preferences etc
Interview Preparation Tips
Skills evaluated in this interview
Mern Full Stack Developer Interview Questions asked at other Companies
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Carwale Interview FAQs
Some of the top questions asked at the Carwale interview -
The duration of Carwale interview process can vary, but typically it takes about less than 2 weeks to complete.
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