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Carwale Software Developer Interview Questions, Process, and Tips

Updated 23 May 2024

Top Carwale Software Developer Interview Questions and Answers

  • Q1. 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 more
  • Q2. find two missing number from a given array ,without sorting and o(n)
  • Q3. one golden bricks n divide it to min number of part so that u can pay each day salary to a worker
View all 9 questions

Carwale Software Developer Interview Experiences

3 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Coding Test 

90 mins, easy, Data structures and algorithm basics

Round 2 - Technical 

(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

  • Answered by AI
Round 3 - Technical 

(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

  • Answered by AI
Round 4 - One-on-one 

(1 Question)

  • Q1. Personality grading

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Oct 2019. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. System design for twitter.
  • Ans. 

    Twitter system design involves multiple components such as servers, databases, caching, and APIs.

    • Use sharding to distribute data across multiple servers

    • Implement caching to reduce database load

    • Use message queues for handling high traffic

    • Implement APIs for user authentication and data retrieval

    • Use load balancers to distribute traffic evenly

    • Implement a search engine for efficient search functionality

  • Answered by AI
  • 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 platforms so that none of them should crash...
  • Ans. 

    The minimum number of platforms needed to avoid train crashes based on arrival and departure times.

    • Sort the arrival and departure arrays in ascending order.

    • Initialize a variable to keep track of the maximum number of platforms needed.

    • Iterate through the arrival and departure arrays simultaneously.

    • If the current arrival time is less than or equal to the current departure time, increment the platform count.

    • If the current...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - I would suggest, don't give up. If you are given any questions then think to give them your solution. Interviewers are too supportive, if you get stuck at any point they will give you hints. They won't judge on this basis that outputs are correct or not maybe you will solve it partially but you will get some plus points for your approach also.

Skills evaluated in this interview

Software Developer Interview Questions Asked at Other Companies

asked in Amazon
Q1. Maximum Subarray Sum Problem Statement Given an array of integers ... read more
asked in Amazon
Q2. Minimum Number of Platforms Needed Problem Statement You are give ... read more
asked in Rakuten
Q3. Merge Two Sorted Arrays Problem Statement Given two sorted intege ... read more
asked in Cognizant
Q4. Nth Fibonacci Number Problem Statement Calculate the Nth term in ... read more
Q5. Find Duplicate in Array Problem Statement You are provided with a ... read more

Software Developer Interview Questions & Answers

user image Sonelal Gupta

posted on 4 Sep 2015

I was interviewed in Jan 2016.

Interview Questionnaire 

8 Questions

  • Q1. Find right veiw of a binary tree
  • Ans. 

    To find the right view of a binary tree, we need to traverse the tree and keep track of the rightmost node at each level.

    • Traverse the tree using level order traversal

    • At each level, keep track of the rightmost node

    • Add the rightmost node to the result array

    • Return the result array

  • Answered by AI
  • Q2. Find two missing number from a given array ,without sorting and o(n)
  • Ans. 

    Find two missing numbers from an unsorted array in O(n) time complexity.

    • Calculate the sum of all numbers from 1 to n using the formula n*(n+1)/2

    • Calculate the sum of all numbers in the given array

    • Subtract the sum of array from the sum of all numbers to get the sum of missing numbers

    • Use the sum of missing numbers and the sum of squares of all numbers from 1 to n to calculate the missing numbers using simultaneous equatio

  • Answered by AI
  • Q3. This round based on project
  • Q4. Normal HR question
  • Q5. Find ave salary without disclosing any one salary
  • Ans. 

    To find average salary without disclosing any one salary

    • Collect salaries of all employees

    • Add all salaries and divide by total number of employees

    • Do not disclose any individual salary

  • Answered by AI
  • Q6. One golden bricks n divide it to min number of part so that u can pay each day salary to a worker
  • Ans. 

    Divide a golden brick into minimum parts to pay daily salary to a worker.

    • The number of parts needed will depend on the daily salary of the worker.

    • The size of the parts should be equal.

    • The parts should be small enough to cover the daily salary but large enough to minimize the number of parts.

    • The formula to calculate the number of parts is: number of parts = total value of the golden brick / daily salary

  • Answered by AI
  • Q7. One goat and 100 lion puzzles
  • Q8. Make 4 equal shape part of a cake if u cut 1/4 part already

Interview Preparation Tips

Round: Test
Experience: do atleast 2-3 code

Round: Technical Interview
Experience: its an easy round for me

Round: Puzzle Interview
Experience: i cant two of puzzles ,but selected for next round
Tips: prepare puzzles

Round: Technical Interview
Tips: prepare project and explain every small things to the interviewer

Skills: ds, algo, dbms, os, networking, they required all you should have good knowledge of all these subject
College Name: NIT Bhopal
Motivation: very good work culture and they give 7.04 LPA in hand and other perk

Skills evaluated in this interview

Interview questions from similar companies

Interview Preparation Tips

Round: Test
Experience: The written test did NOT involve general aptitude questions. Most questions were CS specific and pertained to some kind of algorithmic analysis, design of recursive solutions, designing and tracing out an algorithm on a given sample etc. About 50-60% of the candidates were eliminated in this round.

Round: Test
Experience: The next round was a coding assignment. For those familiar with code-chef, the coding assignment was similar to a medium level problem (in the practice section) and had to be done in C. The codingassignment by design, required algorithmic optimization to execute within the prescribed time limit. About 10 candidates (8 UG and 2 PG) were selected for interviews. Yahoo generally conducts 4 technical interviews and an HR interview. Typically, 2 of the 4 tech interviews will be with immediate seniors in teams that are interested in your profile. The remaining two will be with more senior engineers (in fact, one of my interviews was with the tech director of a vertical at Yahoo). Interviewers discuss with each other after each interview, and some candidates were eliminated after one poor interview. It is therefore quite important to do

General Tips: Apart from technical skills, your communication and social skills are what can make or break an interview and eventually, decide whether or not you get the job. Objectively speaking, most candidates who make it to the final round will be very technically proficient. Therefore, your aim should be to make the decision regarding your candidature anything BUT objective. The real advantage of an interview is to let the interviewer know YOU, beyond just your written test score or your academic credentials. Interviewers like confidence in a candidate and it can even make you seem better than you really are. It will also help to have a few well thought out questions in mind for your interviewer, to show him that you have put in more effort than other candidates to find out about the kind of work going on at the company. One thing youcan do is to find out who all the interviewers are during the pre-placement talk (Yes, attending the PPT CAN BE USEFUL). General Tips Preparation Look up their LinkedIn profiles and note what projects they have worked on or guided. Asking a few insightful questions about those specific projects is a good way to create a good impression of you. It is very difficult to truly judge a candidate during a 45 minute interview, so what matters a lot is the impression left in the interviewers mind about you. If possible, try to establish a social connect during your limited interaction with the interviewers, BEFORE the interviews take place. For example, one of my interviewers, a senior tech manager at Yahoo, was an NITK alumnus. Before the interviews, I spoke to him about his experience in college. As it turns out, he was one of the founders of the web club at NITK, of which I am a member. We spoke for about 15 minutes about how the club has grown and how the club has helped its members ever since.
Skill Tips: For a computer science student who intends to take up a technical job at a tier 1 company, spend as much time as possible, honing your technical skills. Start well before placement season, if possible, in 3rd year itself
College Name: NIT SURATHKAL

I was interviewed before Feb 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

It comprised of general aptitude questions and two coding questions. It was an offline test.

  • Q1. 

    N Queens Problem

    Given an integer N, find all possible placements of N queens on an N x N chessboard such that no two queens threaten each other.

    Explanation:

    A queen can attack another queen if they ar...

  • Ans. 

    The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard where no two queens threaten each other.

    • Use backtracking algorithm to explore all possible configurations.

    • Keep track of rows, columns, and diagonals to ensure queens do not attack each other.

    • Generate and print valid configurations where queens are placed safely.

    • Consider constraints and time limit for efficient solution.

    • Exam...

  • Answered by AI
  • Q2. 

    Sort 0 1 2 Problem Statement

    Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.

    Input:

    The first line contains an integer 'T' representing the n...
  • Ans. 

    Sort an integer array containing only 0s, 1s, and 2s in linear time complexity.

    • Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.

    • Iterate through the array and swap elements based on the values encountered.

    • Achieve sorting in a single scan over the array without using any extra space.

  • Answered by AI
Round 2 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

After having a technical discussion about my CV. He gave me two questions to code.

  • Q1. 

    Ninja and Substrings Problem Statement

    Ninja has to determine all the distinct substrings of size two that can be formed from a given string 'STR' comprising only lowercase alphabetic characters. These su...

  • Ans. 

    Find all unique contiguous substrings of size two from a given string.

    • Iterate through the string and extract substrings of size two

    • Use a set to store unique substrings

    • Return the set as an array of strings

  • Answered by AI
  • Q2. 

    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 points back to a previous node.

    • Traverse the linked list using two pointers, one moving one step at a time and the other moving two steps at a time.

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

    • If one of the pointers reaches the end of the list (null), there is no cycle.

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 minutes
Round difficulty - Easy

This was supposed to be the HR round but out of surprise the interviewer started by giving me a question to code. 
After I approached this question with the right solution he just asked about my family. After that he said to wait. After half an hour the results were announced. A total of three students were hired and I was amongst one of them.

  • Q1. 

    Balanced Parentheses Combinations

    Given an integer N representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.

    Explanati...

  • Ans. 

    Generate all possible combinations of balanced parentheses for a given number of pairs.

    • Use recursion to generate all possible combinations of balanced parentheses.

    • Keep track of the number of open and close parentheses used in each combination.

    • Return the valid combinations as an array of strings.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMagicbricks interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 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 

2 Questions

  • Q1. About sdlc
  • Q2. About web development
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
-
Result
Not Selected

I applied via Walk-in and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Was bit tough and need to concentrate on work time

Round 2 - Coding Test 

Was about coding in any language such as Java python

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in Jun 2022. There were 3 interview rounds.

Round 1 - Coding Test 

Consists of 5 questions of DSA
1 Knapsack, 1 bitwise, 1 string , 1 basic mathematics, 1 dynamic programming

Round 2 - Technical 

(1 Question)

  • Q1. Based on Coding question and dbms and question based on resume.
Round 3 - Technical 

(1 Question)

  • Q1. Recursive approach for printing prime number It was taken by CTO of company

Interview Preparation Tips

Topics to prepare for Zolo Software Developer interview:
  • Data Structures
  • DBMS
  • OS
Interview preparation tips for other job seekers - Overall interview is easy and supportive you will get a lot of time to think your approach and explain your approach
Interview experience
4
Good
Difficulty level
Hard
Process Duration
More than 8 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic aptitude with tracing program

Round 2 - Coding Test 

3 problem with easy to hard

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(1 Question)

  • Q1. Tell me about yourself
  • Ans. 

    I am a passionate software developer with experience in Java, Python, and web development.

    • Graduated with a degree in Computer Science

    • Worked on various projects using Java and Python

    • Familiar with web development technologies like HTML, CSS, and JavaScript

  • Answered by AI
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Carwale Interview FAQs

How many rounds are there in Carwale Software Developer interview?
Carwale interview process usually has 4 rounds. The most common rounds in the Carwale interview process are Technical, Coding Test and One-on-one Round.
What are the top questions asked in Carwale Software Developer interview?

Some of the top questions asked at the Carwale Software Developer interview -

  1. given two arrays that one array consists of the arrival time of trains and the ...read more
  2. find two missing number from a given array ,without sorting and o...read more
  3. one golden bricks n divide it to min number of part so that u can pay each day ...read more

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Carwale Software Developer Interview Process

based on 3 interviews

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