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I applied via Naukri.com and was interviewed in Mar 2022. There were 2 interview rounds.
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I applied via Approached by Company and was interviewed in Mar 2024. There was 1 interview round.
I was interviewed before Sep 2016.
I was interviewed in Mar 2017.
Oops concepts in Java
Encapsulation - hiding implementation details
Inheritance - reusing code and creating parent-child relationships
Polymorphism - multiple forms of a method or object
Abstraction - creating abstract classes and interfaces
Example: Encapsulation - using private variables and public methods
Example: Inheritance - creating a subclass that inherits from a superclass
Example: Polymorphism - using method overloa...
Altering columns in databases involves modifying the structure of a table by adding, deleting or modifying columns.
Use ALTER TABLE statement to modify columns
Add new columns using ADD COLUMN
Delete columns using DROP COLUMN
Modify columns using MODIFY COLUMN
Changing column data type may result in data loss
Reversing a number in Java
Convert the number to a string
Use StringBuilder to reverse the string
Convert the reversed string back to a number
To extract words from a line in Java, split the line using whitespace as delimiter.
Use the split() method of String class
Pass the whitespace regex as argument to split() method
Iterate over the resulting array to get individual words
I applied via Naukri.com and was interviewed in Oct 2019. There were 5 interview rounds.
I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before May 2020. There were 4 interview rounds.
C# concepts including abstraction, interface, abstract method, abstract class, polymorphism, encapsulation, inheritance, and serialization.
Abstraction: hiding implementation details
Interface: defining a contract for behavior
Abstract method: method without implementation
Abstract class: class with one or more abstract methods
Polymorphism: ability of objects to take on multiple forms
Encapsulation: bundling data and behavi...
I applied via Naukri.com and was interviewed in Jan 2021. There were 3 interview rounds.
posted on 7 Feb 2022
I was interviewed before Feb 2021.
Round duration - 70 Minutes
Round difficulty - Medium
This round had 40 MCQ's followed by 2 questions of DS and Algo. The programming questions were preety standard and can be solved within 30 minutes.
Given an array arr
of length N
consisting of integers, find the sum of the subarray (including empty subarray) with the maximum sum among all subarrays.
Find the sum of the subarray with the maximum sum among all subarrays in a given array.
Iterate through the array and keep track of the maximum sum subarray seen so far.
Use Kadane's algorithm to efficiently find the maximum subarray sum.
Handle cases where all elements are negative or array is empty.
Example: For input arr = [-2, 1, -3, 4, -1], the maximum subarray sum is 4.
Given a string str
and a character 'X', develop a function to eliminate all instances of 'X' from str
and return the resulting string.
The first lin...
Develop a function to remove all instances of a given character from a string.
Iterate through the string character by character and only add characters that are not equal to the given character to a new string.
Alternatively, use built-in string manipulation functions to remove all instances of the given character from the string.
Ensure the function handles edge cases such as empty strings or strings with no instances o...
Round duration - 60 Minutes
Round difficulty - Medium
This round had questions from DSA, OS, DBMS and Computer Networks. The programming question was quiet easy and I coded it preety fast after discussing the appropriate approach and complexity analysis.
You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.
Your task is to determine t...
Find the node where two linked lists merge, return -1 if no merging occurs.
Traverse both lists to find their lengths and the difference in lengths
Move the pointer of the longer list by the difference in lengths
Traverse both lists simultaneously until they meet at the merging point
Multitasking involves executing multiple tasks simultaneously, while multiprogramming involves running multiple programs on a single processor.
Multitasking allows multiple tasks to run concurrently on a single processor, switching between them quickly.
Multiprogramming involves loading multiple programs into memory and executing them concurrently, utilizing idle CPU time efficiently.
Examples of multitasking include runn...
A process is an executing instance of a program, while a program is a set of instructions stored in the computer's memory.
A program is a static set of instructions stored on disk, while a process is a dynamic instance of those instructions being executed in memory.
Multiple processes can be running the same program simultaneously, each with its own memory space and resources.
Processes have their own unique process ID (P...
A process is an instance of a program, while a thread is a unit of execution within a process.
A process has its own memory space, while threads share the same memory space.
Processes are independent and isolated, while threads can communicate and share resources.
Creating a new process is more resource-intensive than creating a new thread.
Processes have their own program counter, while threads share the same program coun...
UNION combines and removes duplicate rows, UNION ALL combines without removing duplicates.
UNION combines the result sets of two or more SELECT statements into a single result set
UNION removes duplicate rows from the result set
UNION ALL combines the result sets without removing duplicates
UNION is slower than UNION ALL as it requires additional processing to remove duplicates
Use UNION when you want to combine and remove ...
Views provide a virtual representation of data, offering advantages such as simplifying complex queries, enhancing security, and improving performance.
Views simplify complex queries by predefining commonly used joins, filters, and aggregations.
Views enhance security by allowing users to access only specific columns or rows of a table.
Views improve performance by storing the results of complex queries, reducing the need...
ARP stands for Address Resolution Protocol, used to map IP addresses to MAC addresses in a local network.
ARP is used to find the MAC address of a device based on its IP address
It operates at the data link layer of the OSI model
ARP requests are broadcasted to all devices on the local network
Example: When a device wants to communicate with another device on the same network, it uses ARP to find the MAC address of the des
Round duration - 30 Minutes
Round difficulty - Easy
This is a cultural fitment testing round. HR was very frank and asked standard questions. Then we discussed about my role.
I should be hired because of my strong technical skills, problem-solving abilities, and passion for software development.
I have a solid understanding of data structures and algorithms.
I have experience in developing and debugging complex software systems.
I am a quick learner and can adapt to new technologies and programming languages.
I have a track record of delivering high-quality code on time.
I am a team player and c...
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.
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