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Directi Software Engineer Interview Questions and Answers
8 Interview questions
Divide a rectangle of M x N into smaller rectangles of M1 x N1 to minimize wastage.
Start by dividing the rectangle horizontally or vertically based on the dimensions of the smaller rectangles.
Continue dividing each resulting sub-rectangle until no further division is possible.
Consider the dimensions of the smaller rectangles and the remaining space to minimize wastage.
Keep track of the divisions made to reconstruc...
The glasses are stacked like a pyramid on a table. Each glass can hold a certain amount of water, and the overflow is distributed equally to the glasses below.
The glasses form a pyramid shape, with the topmost glass being the first level and each subsequent level having one more glass than the previous level.
The amount of water held by each glass can be calculated by dividing the total amount of water by the numbe...
The number of 'BB' occurrences at the Nth iteration of the transformation sequence.
At each iteration, A gets transformed to AB and B gets transformed to BA.
To find the number of 'BB' occurrences at the Nth iteration, we need to count the number of 'BB' substrings in the transformed string.
The transformation sequence follows a pattern: AB, ABA, ABAAB, ABAABABA, ...
The number of 'BB' occurrences doubles with each it...
The problem is to find non-empty subsets of a given set of integers whose sum is zero.
The problem is a special case of the knapsack problem and is known to be NP-Complete.
A brute-force approach would involve generating all subsets and checking their sums.
The brute-force approach has an exponential time complexity.
There is no known polynomial time solution for this problem.
Sorting an array of 0, 1 and 2 can be done in O(n) using two pointers.
Use two pointers, one for 0 and one for 2, and a current pointer to traverse the array
If the current pointer encounters a 0, swap it with the 0 pointer and move both pointers to the right
If the current pointer encounters a 2, swap it with the 2 pointer and move the 2 pointer to the left
Repeat until the current pointer meets the 2 pointer
Algorithm to find if a number is present in a sorted n x n matrix with linear time complexity.
Start with the top right element
Compare the element with x
If equal, return its position
If e < x, move down (if out of bounds, return false)
If e > x, move left (if out of bounds, return false)
Repeat till element is found or returned false
Find the kth maximum element in a matrix by analyzing its elements efficiently.
1. Flatten the matrix into a single array for easier manipulation.
2. Sort the array in descending order to easily access the kth maximum element.
3. Use a min-heap of size k to keep track of the top k elements efficiently.
4. Example: For a matrix [[1, 5, 3], [4, 2, 6]], the 2nd max is 5.
5. Edge case: If k is larger than the number of uni...
Data structure with O(1) insert, delete, and find min without creating new structures
Use two stacks, one for actual data and one for minimum values
When inserting, push the value onto the data stack and push the minimum of the new value and the top of the minimum stack onto the minimum stack
When deleting, pop from both stacks
When finding the minimum, return the top of the minimum stack
Directi Software Engineer Interview Experiences
2 interviews found
Anonymous
Interview Questionnaire
5 Questions
- Q1. 1)There are three types of balls arranged linearly in a random order Red, Green and Blue. Now your job is to sort them so that the Red balls are in front follwed by the Green balls and the Blue balls are p...
- Ans.
Sorting an array of 0, 1 and 2 can be done in O(n) using two pointers.
Use two pointers, one for 0 and one for 2, and a current pointer to traverse the array
If the current pointer encounters a 0, swap it with the 0 pointer and move both pointers to the right
If the current pointer encounters a 2, swap it with the 2 pointer and move the 2 pointer to the left
Repeat until the current pointer meets the 2 pointer
- Q2. 2)Given an n x n matrix, where every row and column is sorted in increasing order. Given a number x, how to decide whether this x is in the matrix. The designed algorithm should have linear time complexity...
- Ans.
Algorithm to find if a number is present in a sorted n x n matrix with linear time complexity.
Start with the top right element
Compare the element with x
If equal, return its position
If e < x, move down (if out of bounds, return false)
If e > x, move left (if out of bounds, return false)
Repeat till element is found or returned false
- Q3. 3)In the same matrix mentioned above find the kth maximum element. I said that we just need to compare the last K x K sub matrix and to find the Kth element
- Ans.
Find the kth maximum element in a matrix by analyzing its elements efficiently.
1. Flatten the matrix into a single array for easier manipulation.
2. Sort the array in descending order to easily access the kth maximum element.
3. Use a min-heap of size k to keep track of the top k elements efficiently.
4. Example: For a matrix [[1, 5, 3], [4, 2, 6]], the 2nd max is 5.
5. Edge case: If k is larger than the number of unique e...
- Q4. 4)Given a set of integers, Display the non-empty subsets whose sum is zero. For example, given the set { −7, −3, −2, 5, 8}, the answer is the subset { −3, −2, 5} which sums to zero. This is the special cas...
- Ans.
The problem is to find non-empty subsets of a given set of integers whose sum is zero.
The problem is a special case of the knapsack problem and is known to be NP-Complete.
A brute-force approach would involve generating all subsets and checking their sums.
The brute-force approach has an exponential time complexity.
There is no known polynomial time solution for this problem.
- Q5. 5)Create a data structure where inserting, deleting and finding the minimum element all have O(1) time. i said we can use augmented stack where with each element we can augment the minimum element along wi...
- Ans.
Data structure with O(1) insert, delete, and find min without creating new structures
Use two stacks, one for actual data and one for minimum values
When inserting, push the value onto the data stack and push the minimum of the new value and the top of the minimum stack onto the minimum stack
When deleting, pop from both stacks
When finding the minimum, return the top of the minimum stack
Interview Preparation Tips
Experience: There is a drought situation in Agrabah.King got worried and called Aladdin for helping him out. As he is a modern Aladdin he tookprintouts of places around Agrabah from google maps.For analyzing the map properly, he converted the map into a M x N grid. Each point is represented by either ?0? or ?1?.?1? represents the unit area of water and ?0? represents the unit areaof land. King told him to find the largest continuous patch of water.so that he can send his people over there.As our Aladdin is modern, but not a good programmer, he wants your help. Help him out by printing out the largest area water patch available on map.
College Name: NA
Skills evaluated in this interview
Interview Questionnaire
4 Questions
- Q1. Beer overflow problem. Glasses are stacked like a pyramid onto a table. If you are given X liters of water to pour on the topmost glass, How much water will be held by each glass. Given, Xth glass an hold...
- Ans.
The glasses are stacked like a pyramid on a table. Each glass can hold a certain amount of water, and the overflow is distributed equally to the glasses below.
The glasses form a pyramid shape, with the topmost glass being the first level and each subsequent level having one more glass than the previous level.
The amount of water held by each glass can be calculated by dividing the total amount of water by the number of ...
- Q2. Sub Divide a Rectangle. Given a Rectangle of M X N. U have many smaller rectangles of M1 X N1 and so on. You have to divide the greater rectangle in such a way to minimize the wastage. Rules of division ar...
- Ans.
Divide a rectangle of M x N into smaller rectangles of M1 x N1 to minimize wastage.
Start by dividing the rectangle horizontally or vertically based on the dimensions of the smaller rectangles.
Continue dividing each resulting sub-rectangle until no further division is possible.
Consider the dimensions of the smaller rectangles and the remaining space to minimize wastage.
Keep track of the divisions made to reconstruct the...
- Q3. You are needed to sort a given String. Trick is, you can send letter from any position only to the first of the string. Interviewer didn’t clear me as to if the letters are interchanged or the Ith position...
- Q4. You start with A. In every step, A gets transformed to AB and B get transformed to BA. You are supposed to tell how many ‘BB’ will occur at Nth iteration. E.G. A AB ABBA ABBABAAB … So on
- Ans.
The number of 'BB' occurrences at the Nth iteration of the transformation sequence.
At each iteration, A gets transformed to AB and B gets transformed to BA.
To find the number of 'BB' occurrences at the Nth iteration, we need to count the number of 'BB' substrings in the transformed string.
The transformation sequence follows a pattern: AB, ABA, ABAAB, ABAABABA, ...
The number of 'BB' occurrences doubles with each iterati...
Interview Preparation Tips
Experience: It was a skype round of 90 mins.
Tips: Prior to this we had an online round, you will get it online. Frankly, I don't rem the questions.
Round: Technical Interview
Experience: It was a skype round of 1hr. I was rejected after this round. Next would have been the final round.
Tips: Time was limited, so we had to come up with efficient solution faster.
General Tips: Code Daily and give it your best. Practise will make it easier for you.
Skill Tips: Learn to code fast, you won't get lot of time to think about the problem statement as you get in Long challenges.
Skills: efficiency, Speed, Coding, Algorithm
College Name: IIT DHANBAD
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Software Engineer Interview Questions & Answers
Iris Software
Sheetal D Kharat
posted on 14 Mar 2015
Interview Questionnaire
13 Questions
- Q1. Difference between java and c?
- Ans.
Java is an object-oriented language while C is a procedural language.
Java is platform-independent while C is platform-dependent.
Java has automatic garbage collection while C requires manual memory management.
Java has built-in support for multithreading while C requires external libraries.
Java has a larger standard library compared to C.
Java is more secure than C due to its strong type checking and exception handling.
C ...
- Q2. Aggregation functions in DBMS?
- Ans.
Aggregation functions are used to perform calculations on groups of data in a database.
Aggregation functions include COUNT, SUM, AVG, MAX, and MIN.
They are used with the GROUP BY clause to group data based on a specific column.
COUNT function returns the number of rows in a table or the number of non-null values in a column.
SUM function returns the sum of values in a column.
AVG function returns the average of values in ...
- Q3. How to write any sentence (given to u ) in mirror image form in java?(ans :by 2 ways 1. reverse string function in string object 2 .by aaray conversion )
- Ans.
Two ways to write a sentence in mirror image form in Java: reverse string function and array conversion.
Use the reverse() method of the String class to reverse the sentence
Convert the sentence to a character array, then swap the first and last characters, second and second-to-last characters, and so on until the middle is reached
Example: 'Hello World' becomes 'dlroW olleH'
- Q4. Why static is used in "public static void main"?
- Ans.
Static is used in public static void main to allow the method to be called without creating an instance of the class.
Static methods belong to the class and not to any instance of the class.
The main method is the entry point of a Java program and needs to be called without creating an object of the class.
The static keyword allows the main method to be called directly from the class, without creating an instance of the c...
- Q5. Why there is abstract ,interface and enum class in java?
- Ans.
Abstract classes, interfaces, and enums provide abstraction and modularity in Java.
Abstract classes provide a partial implementation of a class and cannot be instantiated.
Interfaces define a set of methods that a class must implement and can be used for multiple inheritance.
Enums provide a set of named constants.
All three are used for abstraction and modularity in Java.
Abstract classes and interfaces are used for polym...
- Q6. Object oriented software engg definition(definition contains word"framwork") ?and definitionof framwork
- Ans.
Object-oriented software engineering is a framework for designing and developing software using objects.
Object-oriented software engineering is a methodology for designing and developing software using objects.
It involves creating classes and objects that encapsulate data and behavior.
Frameworks are pre-built structures that provide a foundation for building software applications.
Frameworks can include libraries, APIs,...
- Q7. Properties of java(object oriented languages)
- Ans.
Java is an object-oriented language with features like inheritance, encapsulation, and polymorphism.
Inheritance allows classes to inherit properties and methods from other classes.
Encapsulation hides the implementation details of a class from other classes.
Polymorphism allows objects to take on multiple forms or behaviors.
Java also supports abstraction, interfaces, and exception handling.
Example: class Car extends Vehi...
- Q8. Normalization in DBMS (in detail with eg.)
- Ans.
Normalization is a process of organizing data in a database to reduce redundancy and dependency.
Normalization is used to eliminate data redundancy and improve data integrity.
It involves dividing a database into two or more tables and defining relationships between them.
There are different levels of normalization, such as first normal form (1NF), second normal form (2NF), and so on.
Normalization helps in efficient data ...
- Q9. What is difference between ADBMS and DBMS?
- Ans.
ADBMS stands for Advanced Database Management System which is an extension of DBMS with additional features.
ADBMS has advanced features like data mining, data warehousing, and online analytical processing.
ADBMS is used for handling large and complex data sets.
DBMS is a basic system for managing data and is used for small and simple data sets.
DBMS does not have advanced features like ADBMS.
Examples of ADBMS are Oracle, ...
- Q10. Your Introduction
- Ans.
I am a software engineer with 5 years of experience in developing web applications.
Proficient in programming languages such as Java, Python, and JavaScript
Experience in developing RESTful APIs and microservices
Familiarity with front-end technologies such as HTML, CSS, and React
Strong understanding of database management systems like MySQL and MongoDB
Experience in Agile development methodologies
- Q11. Why u want do job?(why ur not doing post graduation?)
- Ans.
I want to gain practical experience and contribute to the industry while also learning on the job.
I believe that hands-on experience is invaluable in the software engineering field
I am eager to apply my skills and knowledge to real-world projects
I am excited to work with a team and learn from experienced professionals
I am not currently pursuing post-graduation as I feel that gaining industry experience is more importan...
- Q12. What will u do if ur from java background and company requires .NET peoples,not java peoples
- Ans.
I would leverage my Java skills to quickly learn .NET and demonstrate my adaptability and problem-solving abilities.
Identify transferable skills: Both Java and .NET share object-oriented principles, making it easier to adapt.
Engage in self-study: Utilize online resources like Microsoft Learn or Pluralsight to gain .NET knowledge.
Build a small project: Create a simple application using .NET to showcase my ability to lea...
- Q13. Why this Company ?and some information about company( like achivements)
Interview Preparation Tips
Experience: Test contains 45 question having Maths(approx. 30 questions) , verbal & non-verbal , logical reasoning Qustions.
1 hr to solve it. And no negative marking .Easy aptitude test for me cause i hav given almost 8 apti tests before it. Most of the questions from R.S. Agarwal (Quantitative Aptitude)Book. we total 40 to 50 peoples given the test(All branch students eligibal for test above 60 % aggregate)
Duration: 60 minutes
Total Questions: 45
Round: Technical Interview
Experience: Out of 40-50 peoples appeared for aptitude test 12 students were eligibal for technical interview. Interview was in the Company . The interviewer ask the questions from the answers i am giving to his previous question .And trying to confuse me.
but after understanding my programming to his question and some logical answers to his qusetions he stops confusing me. And go on saying 'You r correct or you r near to answer,think little bit more about it'.
Tips: Be confident , If u don't know answer say that "i didn't brush up that topic". Don't go on interviwer's expression, they(expressions) always distract u.
Round: HR Interview
Experience: After 50-55 minutes of technical interview , we had HR interview.It was easy Interview, all the 5 candidates have these same set of questions ,so we prepared the answers and all 5 got selected in company.
General Tips: Do aptitude test practice online more
Don't add things that u dont know in resume
(for freshers :keep resume exactly of 2 pages and simple,don't use different font styles and size much)
Skills: Java programming, c++, sql(DBMS), Html
College Name: TERNA ENGINEERING COLLEGE
Motivation: It is college campus placement only, But The Representator of company(each) gives the motivation to all candiates mostly
Skills evaluated in this interview
I appeared for an interview in Sep 2017.
Interview Questionnaire
4 Questions
- Q1. Technical interview take by client technical person actually they are hiring for another client so they took total 3 technical round and final will HR round
- Q2. Asking about life cycle of Dot net mvc contols entity frame work and SQL queries
- Q3. Problem based on oops and SQL queries outputs
- Q4. Basic questions about my self ,salary discussion basic formalities form I have to fill up
Interview Preparation Tips
Experience: There were around 15 objective question that includes mvc, c#.net and SQL server. It was very simple question like different types of filters,Acton results in mvc. Basic oops concept and dot net web page regarding
Round: Resume Shortlist
Experience: After completing test round another was technical round discussed maily for mvc and SQL server questions. Around 30 mint discussion. After qualify this round another round will start from client technical staff.
General Tips: It was for 2-3 year experience person very simple to crack but focus on you which profile you are looking for study interview questions from net
Skills: Dot net mve oops concept jQuery and SQL server
I applied via Naukri.com and was interviewed before May 2018. There were 5 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Telephonic technical
- Q2. Core Java related exception handling ,design pattern ,oops solid design principle, rest API, different annotations of spring and jpa
- Q3. Same questions on telephonic round but detailed elaborate and given simple problem statement we had to justify that why it's time n space complexity valid. Rest API questions hibernate orm use
- Q4. Manager round just to check whether you have actually worked on project or not stress testing performance questions scenario questions
Interview Preparation Tips
Skills: Core Java sevlet JSP hibernate spring rest API, Communication, Body Language, Problem Solving, Analytical Skills, Decision Making Skills
Duration: 1-4 weeks
I appeared for an interview in Sep 2019.
Interview Questionnaire
1 Question
- Q1. Pl sql related questions
Interview Preparation Tips
Laterly after I had lunch by 2pm Hr came n told me that Manager is not available now so we will be conducting ur further round in weekdays.
Then there was no mail or call so I purposely mailed them still haven't got proper response from them, so at last I told my friend who referd me to ask for an update the same HR told him that they want Immediate joiner so we can't process him to further round. Wasted my whole day over there
I applied via Recruitment Consultant and was interviewed before Jan 2020. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. What Prog Languages known? Prior Software Experience? How good on U.S. Client Face to Face and telephonic interaction for projects?
- Ans.
I am proficient in Java, Python, and C++. I have 2 years of experience in software development. I have excellent communication skills for client interaction.
Proficient in Java, Python, and C++
2 years of software development experience
Excellent communication skills for client interaction
Interview Preparation Tips
Software Engineer Interview Questions & Answers
HTC Global Services
ARUN PRASATH JAYABAL
posted on 15 Jul 2022
I applied via Approached by Company and was interviewed before Jul 2021. There were 2 interview rounds.
Basic programming questions
(1 Question)
- Q1. Salary and self intro discussion
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Apr 2021. There was 1 interview round.
(2 Questions)
- Q1. Basic python list tuples set dictionary related questions
- Q2. Decorators generator and django rest framework
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Sep 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. IOS Basics , iPhone programming
Interview Preparation Tips
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