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Check if array of strings is a palindrome or not.
Iterate through the array and compare each string with its reverse to check for palindrome.
Ignore spaces and punctuation while checking for palindrome.
Example: ['madam', 'racecar', 'hello', 'level'] should return true.
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
Allows a class to inherit attributes and methods from another class
Promotes code reusability and reduces redundancy
Creates a parent-child relationship between classes
Types of inheritance include single, multiple, multilevel, and hierarchical
Example: Class 'Animal' can be a parent class with attrib...
Objects in OOPs refer to instances of classes that encapsulate data and behavior.
Objects are created based on a class blueprint
Objects have attributes (data) and methods (behavior)
Objects allow for data encapsulation and abstraction
Example: Class 'Car' can have objects like 'Toyota', 'Honda', etc.
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order.
Start by comparing the first two elements of the array and swap them if necessary.
Continue comparing adjacent elements and swapping them until the array is sorted.
Repeat this process for each element in the array until no more swaps are needed.
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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.
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
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.
A queen can attack another queen if they ar...
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.
Given an integer array arr
of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.
The first line contains an integer 'T' representing the n...
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).
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
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...
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
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
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.
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 in Oct 2020.
Round duration - 90 minutes
Round difficulty - Easy
There were two section Aptitude and Coding.
Imagine you are Harshad Mehta's friend, and you have been given the stock prices of a particular company for the next 'N' days. You can perform up to two buy-and-sell ...
The task is to determine the maximum profit that can be achieved by performing up to two buy-and-sell transactions on a given set of stock prices.
Iterate through the array of stock prices and calculate the maximum profit that can be achieved by buying and selling at different points.
Keep track of the maximum profit after the first transaction and the maximum profit overall by considering different combinations of buy a...
Round duration - 60 minutes
Round difficulty - Easy
This was the first technical interview.
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Find pairs of elements in an array that sum up to a given value, sorted in a specific order.
Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.
Keep track of pairs in a hash set to avoid duplicates.
Sort the pairs based on the criteria mentioned in the question.
Return the sorted list of pairs.
Tip 1 : Prepare theory subjects well
Tip 2 : Start doing some development and learn a framework from 2nd year
Tip 1: Mention projects with technologies
Tip 2: Make important words in bold
posted on 19 Sep 2024
I applied via Company Website and was interviewed in Aug 2024. There were 2 interview rounds.
Very basic aptitude questions along with few coding questions
I appeared for an interview in May 2025, where I was asked the following questions.
I am proficient in several programming languages, each suited for different tasks and projects.
JavaScript: Used for web development, creating interactive front-end applications.
Python: Great for data analysis, machine learning, and scripting tasks.
Java: Commonly used for building enterprise-level applications and Android development.
C#: Utilized for developing Windows applications and game development with Unity.
SQL: E...
posted on 15 Apr 2024
I applied via Campus Placement
The basic question is related to profit percentage, time and distance
Yes, the database schema can be of various types such as relational, hierarchical, network, object-oriented, etc.
Relational database schema is the most common type, using tables to store data with relationships between them.
Hierarchical database schema organizes data in a tree-like structure.
Network database schema allows multiple relationships between records.
Object-oriented database schema stores data as objects with...
posted on 5 Aug 2024
BASIC DSA LIKE ARRAY AND STRING
System design for an electric charger app involves creating a user-friendly interface, integrating with payment systems, and ensuring efficient charging station management.
Design a user-friendly interface for users to locate and reserve charging stations
Integrate with payment systems for seamless transactions
Implement efficient charging station management to monitor availability and maintenance
Consider scalability for ...
Design diagram for a software developer role.
Use UML diagrams to show class relationships and interactions
Include components like classes, interfaces, relationships, and methods
Consider using tools like Lucidchart or draw.io for creating the diagram
posted on 25 Apr 2025
I appeared for an interview in Oct 2024, where I was asked the following questions.
Threads are lightweight processes that enable concurrent execution within a program, improving efficiency and responsiveness.
Threads share the same memory space, allowing for faster communication compared to processes.
They are used in applications like web servers to handle multiple requests simultaneously.
Example: A web browser uses threads to load multiple tabs at once without freezing.
Threads can be created using li...
posted on 15 May 2025
I appeared for an interview in Apr 2025, where I was asked the following questions.
I applied via Campus Placement and was interviewed in Mar 2024. There were 2 interview rounds.
Aptitude and coding of 2 hours
based on 1 interview experience
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