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I applied via Naukri.com and was interviewed before Feb 2023. There were 3 interview rounds.
Java hackerank test on 5 questions
I applied via Referral and was interviewed before Sep 2021. There was 1 interview round.
Steps to make software secure
Perform regular security audits
Implement secure coding practices
Use encryption for sensitive data
Implement access controls and authentication
Stay up-to-date with security patches and updates
posted on 25 Oct 2023
The program checks if a given string is a palindrome or not.
Create a function that takes a string as input
Reverse the string and compare it with the original string
Return true if they are the same, false otherwise
Merge sort implemented in a linked list
Divide the linked list into two halves using slow and fast pointers
Recursively sort each half
Merge the sorted halves back together
Finding patterns in a stream of numbers involves analyzing the sequence for recurring trends or relationships.
Look for repeating sequences or intervals in the numbers.
Check for arithmetic progressions or geometric progressions.
Consider using algorithms like sliding window or dynamic programming for efficient pattern detection.
posted on 18 Aug 2022
I applied via LinkedIn and was interviewed in Jul 2022. There were 2 interview rounds.
I appeared for an interview before Mar 2021.
Round duration - 40 minutes
Round difficulty - Easy
Technical round with questions based on DSA.
Create a program to reverse a given integer N
. The output should be the reversed integer.
If a number has trailing zeros, their reversed version should not inclu...
Reverse a given integer while excluding trailing zeros.
Create a program to reverse the given integer by converting it to a string and then reversing it.
Remove any trailing zeros from the reversed string before converting it back to an integer.
Handle the constraints of the input integer being between 0 and 10^8.
Example: For input 1230, the output should be 321.
You are given a Singly Linked List of integers. Your task is to reverse the Linked List by changing the links between nodes.
The first line of input contai...
Reverse a given singly linked list by changing the links between nodes.
Iterate through the linked list and reverse the links between nodes.
Use three pointers to keep track of the current, previous, and next nodes.
Update the links while traversing the list to reverse it.
Return the head of the reversed linked list.
new int[5] is C++ specific and initializes the array with default values, while malloc(5 * sizeof(int)) is a C function and does not initialize the array.
new int[5] is C++ specific and calls constructors for each element in the array.
malloc(5 * sizeof(int)) is a C function and does not call constructors, leaving the array uninitialized.
new int[5] returns a pointer to the first element of the array, while malloc(5 * siz...
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.
I appeared for an interview before Apr 2021.
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions on OOPS and OS mainly.
Little Endian and Big Endian refer to the order in which bytes are stored in computer memory.
Little Endian stores the least significant byte first, while Big Endian stores the most significant byte first.
Little Endian is commonly used in x86 architecture, while Big Endian is used in architectures like SPARC and PowerPC.
Endianness can affect data transmission between systems with different byte orders.
Program to determine system's endianness
Check the endianness by storing a multi-byte integer and checking the byte order
Use bitwise operations to extract the least significant byte
If the least significant byte is at the lowest memory address, it's little-endian
If the least significant byte is at the highest memory address, it's big-endian
The volatile keyword in programming is used to indicate that a variable's value can be changed unexpectedly.
Volatile keyword is used in multithreaded programming to prevent compiler optimizations on variables that can be changed by other threads.
It tells the compiler not to cache the variable's value in a register, ensuring that every access is made to the variable's memory location.
Commonly used in embedded systems pr...
Function pointers in C are used to store the address of functions, allowing for dynamic function calls and callbacks.
Function pointers can be used to implement callbacks in event-driven programming.
They can be used to switch between different functions at runtime.
Function pointers are commonly used in implementing data structures like function pointers in an array of function pointers.
Example: void (*funcPtr)(int) = &a
Design a data structure for multi-threading
Use a thread-safe queue to manage tasks for each thread
Implement a lock or semaphore to control access to shared resources
Consider using condition variables for synchronization
Use atomic operations for shared variables to prevent race conditions
The kernel is the core component of an operating system that manages system resources and provides a bridge between software and hardware.
Manages system resources such as CPU, memory, and I/O devices
Provides a bridge between software applications and hardware components
Handles tasks such as process scheduling, memory management, and device drivers
Controls communication between hardware and software layers
A storage class in programming defines the scope and lifetime of variables.
Storage classes include auto, register, static, and extern.
Auto variables are created when a function is called and destroyed when the function ends.
Register variables are stored in CPU registers for faster access.
Static variables retain their value between function calls.
Extern variables are declared outside of any function and can be accessed
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
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.
posted on 9 Dec 2021
I applied via Naukri.com and was interviewed before Dec 2020. There were 3 interview rounds.
OOPs concept stands for Object-Oriented Programming concepts which includes encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation is the process of hiding the implementation details from the user.
Inheritance allows a class to inherit properties and methods from another class.
Polymorphism allows objects to take on multiple forms or behaviors.
Abstraction is the process of hiding unnecessary details from
Lazy loading is a technique used to defer the loading of non-critical resources until they are needed.
It improves page load time and performance.
It is commonly used for images, videos, and other media files.
It can be implemented using JavaScript libraries like LazyLoad or Intersection Observer API.
Lazy loading can also be used for modules and components in web applications.
It helps to reduce the initial load time of th
Eager loading is a technique used in software development to load related data in advance to avoid multiple database queries.
Eager loading is used to optimize database queries and improve performance.
It loads all the required data in a single query instead of making multiple queries.
It is commonly used in Object-Relational Mapping (ORM) frameworks like Hibernate, Entity Framework, etc.
Eager loading can be used with var...
I appeared for an interview before May 2021.
Round duration - 60 Minutes
Round difficulty - Medium
Timing: Morning
How was the environment? It happened in the Computer Lab of my institution
All students were assigned a computer and we had to solve questions on hackerrank
Consider 'N' individuals numbered from 0 to N-1 standing in a queue. You are provided with two arrays: Height
and Infront
, each consisting of 'N' non-negative int...
The task is to find the actual order of people in a queue based on their heights and the number of taller people in front of them.
Iterate through the given arrays and create a list of tuples containing the height and number of taller people for each person.
Sort the list of tuples in descending order of height and ascending order of the number of taller people.
Create an empty result list and insert each tuple into the r...
Round duration - 60 Minutes
Round difficulty - Medium
Round was a mix of concepts from OOPS, OS and Problem Solving
Given a Binary Search Tree (BST) and a key value 'X', determine if there exists a node within the BST containing the value 'X'.
Consider the tree represe...
The task is to find if a given value is present in a Binary Search Tree (BST).
Start from the root node and compare the value with the target value.
If the value matches, return true.
If the target value is less than the current node value, move to the left child.
If the target value is greater than the current node value, move to the right child.
Repeat the process until a match is found or a leaf node is reached.
If a leaf...
Tip 1 : Try to code the data structures that you have learned to understand things better
Tip 2 : Try to solve the problem even if it is the worst possible solution you think and then try to optimize don't jump to get the
best possible solution
Tip 3 : Discuss things among peers it helps to improve the understanding, even try to teach someone anything new you learn, this is very helpful during the interviews as you will have habit of explaining things
Tip 1 : Try to be honest in the resume don't write something you don't know, most of the time it backfires.
Tip 2 : Try to make 2 good projects for cv and know about the challenges you can face on the project and think about how you can solve that challenge.
posted on 16 Sep 2021
I appeared for an interview in Apr 2021.
Round duration - 45 minutes
Round difficulty - Medium
Timing was 12 PM. Interviewer was nice.
You are given a string STR
which contains alphabets, numbers, and special characters. Your task is to reverse the string.
STR = "abcde"
"e...
Reverse a given string containing alphabets, numbers, and special characters.
Iterate through the string from end to start and append each character to a new string.
Alternatively, use built-in functions like reverse() or slicing to reverse the string.
Handle special characters and numbers while reversing the string.
Ensure to consider the constraints on the length of the string and number of test cases.
Your task is to rearrange a given array ARR
such that all zero elements appear at the beginning, followed by non-zero elements, while maintaining the relative order of...
Rearrange an array such that all zero elements appear at the beginning, followed by non-zero elements, maintaining relative order of non-zero elements.
Iterate through the array and maintain two pointers - one for the next position to place a zero and one for the next non-zero element.
Swap the elements at these pointers until all zeros are moved to the left and non-zero elements are in their relative order.
Time complexi...
SQL query to find the second highest salary from a table
Use the MAX() function to find the highest salary
Use the NOT IN operator to exclude the highest salary from the results
Order the salaries in descending order and limit the result to 1
Tip 1 : Do some projects.
Tip 2 : Practice problem solving questions.
Tip 1 : Keep it short.
Tip 2 : Do not put false things on resume.
posted on 16 Nov 2021
I appeared for an interview in Jan 2021.
Round duration - 60 Minutes
Round difficulty - Medium
Online test
Based on c++,c and java basics
MCQ questions based on C++, C, and Java basics.
Understand the differences between C++, C, and Java syntax and features.
Be familiar with basic concepts like data types, control structures, and functions.
Practice solving MCQs to improve your understanding of the languages.
Round duration - 150 Minutes
Round difficulty - Medium
Technical interview
The task is to determine the number of distinct elements in every sliding window of size 'K' across an array 'ARR' of size 'N'. A 'K' sized window is a contiguous sequ...
Calculate the count of distinct elements in each sliding window of size 'K' across an array 'ARR'.
Use a sliding window approach to iterate through the array and keep track of distinct elements using a hashmap or set.
Update the count of distinct elements in each window as it slides across the array.
Return the array detailing the count of distinct elements in each 'K' sized window for each test case.
You are given a Singly Linked List of integers. Your task is to sort the list using the 'Merge Sort' algorithm.
The input consists of a single line contain...
Sort a Singly Linked List using Merge Sort algorithm.
Implement the Merge Sort algorithm for linked lists.
Divide the list into two halves, sort each half recursively, and then merge them.
Use a fast and slow pointer to find the middle of the list for splitting.
Handle the base cases of empty list or single node list.
Example: Input: 4 3 2 1 -1, Output: 1 2 3 4
Round duration - 20 minutes
Round difficulty - Hard
Hr interview
Tip 1 : Go through oosp concept properly
Tip 2 : Good knowledge on coding
Tip 3 : intermediate knowledge on database and data structures
Tip 1 : A project based on database
Tip 2 : Mention all the fields properly and have a prior knowledge on your project
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