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IDrive Backend Developer Interview Questions and Answers
IDrive Backend Developer Interview Experiences
1 interview found
I applied via Referral and was interviewed in Nov 2024. There was 1 interview round.
(5 Questions)
- Q1. Difference between method overloading and overriding
- Ans.
Method overloading is having multiple methods in the same class with the same name but different parameters, while method overriding is redefining a method in a subclass with the same name and parameters as in the superclass.
Method overloading involves multiple methods with the same name but different parameters.
Method overriding involves redefining a method in a subclass with the same name and parameters as in the sup...
- Q2. Threads and its methods
- Ans.
Threads in programming allow for concurrent execution of tasks. Methods like start(), join(), sleep() are used to control threads.
Threads in programming allow for concurrent execution of tasks
start() method is used to start a thread
join() method is used to wait for a thread to finish before continuing
sleep() method is used to pause a thread for a specified amount of time
- Q3. Sql inner join query
- Ans.
An SQL INNER JOIN combines rows from two or more tables based on a related column.
INNER JOIN returns only matching rows from both tables.
Example: SELECT * FROM Employees INNER JOIN Departments ON Employees.DeptID = Departments.ID;
Use INNER JOIN when you need data that exists in both tables.
Multiple INNER JOINs can be used to combine more than two tables.
- Q4. Springboot annotations
- Q5. Why we need autowired annotation when we have new keywordto create object
- Ans.
Autowired annotation is used in Spring framework for dependency injection, while new keyword is used for manual object creation.
Autowired annotation is used for dependency injection in Spring framework, allowing objects to be automatically wired together without manual instantiation.
Using new keyword for object creation leads to tight coupling and makes the code harder to maintain and test.
Autowired annotation promotes...
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Interview questions from similar companies
It was a basic pre interview test than contains 45 question mixed up of nodejs, j avascript , reactks , pseudo code , english and logical reasoning. The time for it was an hour.
(1 Question)
- Q1. Two dsa questions , one was leetcode medium level and other one was easy.
Third was purely based on js and nodejs .
(1 Question)
- Q1. This round was all about the projects. the interviewer asked questions related to projects only .
(1 Question)
- Q1. This was the final round in which hr discussing all the points privacy policy benifits and company policies etc.
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Aug 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. About Django and Python basics
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Apr 2021. There were 2 interview rounds.
SQL questions and query output.
(1 Question)
- Q1. I had interview on SQL and pl SQL. So the interview started with basic sql questions and then level increased. Question were asked on joins, union, rank, dense rank. Indexes, triggers. I was asked to ri...
Interview Preparation Tips
Senior Software Engineer Interview Questions & Answers
Incture Technologies
Anonymous
posted on 29 Jan 2021
I applied via Naukri.com and was interviewed in Jul 2020. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Basic java questions in firt round of interview. Next few rounds included everything from basics of core java to coding, problem solving, testing techniques etc. Questions were asked from collections basic...
- Q2. Write junit test cases for different scenario.
- Ans.
JUnit test cases for different scenarios
Identify different scenarios to be tested
Write test cases for each scenario
Ensure test cases cover all possible outcomes
Use assertions to verify expected results
Mock dependencies if necessary
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Regarding PHP
Interview Preparation Tips
I appeared for an interview before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
- Q1.
N Queens Problem
Given an integer
N, find all possible placements ofNqueens on anN x Nchessboard 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 without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
- Q2.
Sort 0 1 2 Problem Statement
Given an integer array
arrof 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 array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
(2 Questions)
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
- Q1.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading, trailing, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
- Q2.
Circular Linked List Detection
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Note:
- A linked list is considered circula...
- Ans.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Interview Preparation Tips
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.
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.
Skills evaluated in this interview
Interview Preparation Tips
Experience: The questions were of medium to high difficulty. What set this test apart was the fact that each question had different weightage ranging from 0.5 to 3 marks per question. Time was a major factor. So my strategy was to attempt all the 1 and 1.5 marks questions which constitute the major chunk of the paper in around 40 minutes and spend the remaining 20 minutes for the 2 and 3 mark questions. I did not even bother reading the 0.5 mark questions. The 2 and 3 mark questions were difficult and those will differentiate you from others. 1600 students wrote the test and only 86 got shortlisted for the next round.
Duration: 60 minutes
Total Questions: 40
Round: Technical Interview
Experience: I was asked to write a C program to print the Fibonacci sequence and a basic SQL query. Apart from this I was asked a puzzle and other questions related to my resume. Out of the 86, only 26 students were called for the next round which again was a technical interview.
Round: Technical Interview
Experience: This was similar to the first technical interview. I had to write a C program to print the prime numbers between 1 and 100 and a puzzle was asked again. Apart from this a guesstimate to find the number of cars between 2 places was asked and a scenario based question too was asked. These were followed by resume related questions.
Round: HR Interview
Experience: All the 26 students who attended the second technical round were allowed to attend HR round as well. This was just for 4 - 5 minutes. I was asked about my family background and why I should be hired. My fondest memories from school days were asked too. Finally offer letter was given to 10 students out of the 1600 who wrote the test :P
General Tips: Just keep a calm head and attempt the questions. Ask for time to think if you are not able to answer the questions immediately. Be bold and confident. That is sufficient :)
Skills: Puzzle Solving Capability, Ability To Think, SQL, C Programming
College Name: VIT Vellore
Software Engineer Interview Questions & Answers
MAQ Software
Rohit Karnatakapu
posted on 10 Nov 2015
Interview Preparation Tips
Experience: They selected students who have CGPA greater than 8.5.After the selection was done,we had skype interviews where each student was given a slot.In the interview they ask you about 'tell me about yourself',your projects.You should explain the projects exactly and clearly.They ask you better alternatives for implementing the project.After that on the basis of the project they ask you questions related to that subject.Data structures is very important.After the questions on projects were asked they ask you to write programs on data structures(simple programs). They asked me a program to reverse a singly linked list. After that,if they are impressed with it,they go for databases.One should be thorough with functionalities of each key.If time permits they may ask you puzzles(some of my friends were asked). Quite an easy interview.They give you enough time to think so no worries.People with some interview experience can easily crack this.The main objective of the interviewer is he/she checks whether the student is perfect in the concepts learned.
Tips: Don't be panic.If you don't know anything directly say 'I don't know'. They ask you very easy questions.
General Tips: Don't be panic.Since this is skype interview you can be relaxed.Be cool and focussed .Listen to the interviewer questions carefully.
Skills: Database Management, Algorithms And Data Structures
College Name: VIT Vellore
Motivation: Company works on latest trends like azure,etc and they work on projects related to microsoft.
ABHISHEK V
Interview Preparation Tips
Experience: 1st Round : 30 Aptitude Questions (Difficulty Level-HIGH) with nega
tive marking- My Score 15/30, Highest in the test
+ 2 Coding Questions ( Dyanamic Programming + N-Queens Problem)
Round: Technical Interview
Experience: Technical Interview- Questions based on recurssion DSA, HTML.
General Tips: Just know the project you have done in details , don't bluff
First Interview and got it in single shot.
Skill Tips: Karumanchi for DSA, w3 Schools for web related topics DBMS and SQL from Tutorial point.
Skills:
College Name: NIT Surathkal
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