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The program should find the missing sequential number in an array of numbers.
Iterate through the array and check if the next number is present.
If the next number is not present, that number is the missing sequential number.
Observation is the act of noticing or perceiving something, while a promise is a commitment to do or not do something in the future.
Observation involves noticing or perceiving something through the senses.
A promise is a commitment made by one person to another to do or not do something.
Observation is based on what is currently happening or existing, while a promise is based on future actions or behavior.
Observation is ...
I applied via Naukri.com and was interviewed in Aug 2024. There were 3 interview rounds.
Spring injects dependencies through inversion of control and dependency injection.
Spring uses inversion of control to manage objects and their dependencies.
Dependencies are injected into a class through constructor injection, setter injection, or field injection.
Spring container is responsible for creating and managing objects and their dependencies.
Example: @Autowired annotation is used for dependency injection in Spr
Hibernate connects to the database using JDBC (Java Database Connectivity) API.
Hibernate uses JDBC API to establish a connection to the database.
It uses JDBC drivers to communicate with the database.
Hibernate configuration file contains database connection details.
SessionFactory in Hibernate is responsible for creating sessions and managing connections.
Securing APIs involves using authentication, authorization, encryption, and monitoring.
Implement authentication mechanisms such as OAuth, JWT, or API keys
Use authorization to control access to APIs based on roles and permissions
Encrypt data transmission using HTTPS/TLS to prevent eavesdropping
Implement rate limiting and throttling to prevent abuse and DDoS attacks
Regularly monitor API traffic and logs for suspicious ac
Multiple DBs can be configured in an application by using database connection pooling, configuring multiple data sources, and managing transactions across databases.
Use database connection pooling to efficiently manage connections to multiple databases
Configure multiple data sources in the application to connect to different databases
Implement transaction management to ensure data consistency across multiple databases
Worst experience company is not so good
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
OOP focuses on creating objects that interact with each other to solve problems
Encapsulation, inheritance, and polymorphism are key principles of OOP
Examples of OOP languages include Java, C++, and Python
I applied via Referral and was interviewed before Aug 2023. There were 4 interview rounds.
I applied via Approached by Company and was interviewed in Apr 2024. There was 1 interview round.
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 applied via Naukri.com and was interviewed before Sep 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2021. There were 4 interview rounds.
posted on 22 Dec 2024
The first round of the interview includes Data Structures and Algorithms (DSA).
The second round of interviews involves a project.
based on 1 interview
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