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I was interviewed in May 2022.
Round duration - 60 minutes
Round difficulty - Medium
Round started with an intro about the project. In my project i have mentioned that i had use Cassandra. The interviewer asked why use Cassandra , why not other No Sql database.
After that the interviewer started asking about the java concepts. How exception propagate takes in case of polymorphism.
There a question about multilevel inheritance. There were three classes parent, child , grandchild in a multlevel inheritance.
All three classes have a function with same name.
Question was about if we call a method something like this
Parent p = new Grandchild();
p.method1();
which class method would be called
You are provided with an integer array ARR
of length 'N'. Your objective is to determine the first missing positive integer using linear time and constant space. T...
Find the smallest missing positive integer in an array efficiently.
Iterate through the array and mark positive integers as visited using index as value
Iterate through the marked array to find the first missing positive integer
Handle negative numbers by ignoring them during marking process
Round duration - 60 minutes
Round difficulty - Medium
Interviewer started with some questions about Database locks .
I had to prepare a low level design of the library management system.
Then there were follow up questions regarding how many database table you will use, normalizing those databse table, writing the service logic for one of the functionality
A Library Management System to manage books, users, and transactions.
Create a database to store information about books, users, and transactions.
Implement functions to add, update, and delete books and users.
Allow users to check out and return books, with due date tracking.
Generate reports on book availability, user activity, and overdue books.
Round duration - 30 Minutes
Round difficulty - Easy
It was managerial round. They asked few questions about the project and why you use this particular technology.
Tip 1 : Be very clear with java basics, polymorphism in multilevel inheritance. Future, callable, completable furture in concurrency, stream api.Concurrent hash map, Database locks , how Database indexes are fast.
Tip 2 : In 2 round they are going to make you do a low level design for an application. In my case it was library management system, Be ready for the follow up questions like how many tables are you going to use this low level design, normalizing the tables you have used. Write logic for one of the service in the low level design.
Tip 3 : For the managerial round, you should know why you used this partcular tech stack.
Tip 1 : Only mention those things in projects which you have really done in your organization. Morgan stanley is particular rigorous about the projects.
Tip 2 : Be sure to highlight what business values your project brought to the organization
I applied via Approached by Company and was interviewed in Jul 2024. There were 3 interview rounds.
DSA, Leetcode medium -2 problems
Count substrings with unique characters in a given string
Use a sliding window approach to keep track of unique characters in a substring
Use a set to store characters in the current window and update the window accordingly
Increment the count of valid substrings whenever a new character is added to the set
Debugging a Java code involves identifying and fixing errors in the code to ensure it runs correctly.
Start by understanding the error message or symptoms of the issue.
Use debugging tools like breakpoints, watches, and logging to track the flow of the code.
Review the code logic and check for common mistakes like typos, incorrect variable assignments, or logic errors.
Test different scenarios to reproduce the issue and na...
Design a parking system with different types of parking spots
Create classes for different types of parking spots (e.g. compact, regular, handicap)
Implement methods for checking availability, reserving, and releasing spots
Consider implementing a parking lot class to manage all parking spots
I was interviewed in Mar 2021.
Round duration - 80 minutes
Round difficulty - Medium
Given a 2-D matrix mat
with 'N' rows and 'M' columns, where each element at position (i, j) is mat[i][j]
, determine the length of the longest increasing...
The problem involves finding the length of the longest increasing path in a 2-D matrix starting from a given cell.
Use dynamic programming to keep track of the longest increasing path starting from each cell.
Implement a recursive function to explore all possible paths from a cell.
Update the length of the longest path for each cell based on the maximum path length from its neighbors.
Consider edge cases such as boundary c...
Round duration - 50 minutes
Round difficulty - Hard
It was purely Data Structures and Maths.
Given an integer array ARR
of size N
, perform the following operations:
- update(l, r, val):
Add (val + i)
to arr[l + i]
for all 0 ≤ i ≤ r - l
.
- rangeSu...
Implement update and rangeSum operations on an integer array based on given queries.
Implement update(l, r, val) by adding (val + i) to arr[l + i] for all i in range (0, r - l).
Implement rangeSum(l, r) to return the sum of elements in the array from index l to r.
Handle queries using 1-based indexing.
Ensure constraints are met for input values.
Output the sum of arr[l..r] for each rangeSum operation.
Round duration - 70 Minutes
Round difficulty - Easy
Round duration - 30 Minutes
Round difficulty - Easy
Given a pattern as a string and a set of words, determine if the pattern and the words list align in the same sequence.
T (number of test cases)
For each test ca...
The problem involves determining if a given pattern aligns with a list of words in the same sequence.
Iterate through the pattern and words list simultaneously to check for matching sequences.
Use a hashmap to store the mapping between characters in the pattern and words in the list.
Compare the mappings to determine if the pattern and words align in the same sequence.
Tip 1 : I solved Interviewbit mostly
Tip 2 : Revised my Coding Ninjas Course
Tip 3 : Created One Project (Helped me a lot during Design Interview )
Tip 1 : I have done some internship as a Software Developer.
Tip 2 : Have some good project on my resume.
I was interviewed in Jan 2022.
Round duration - 60 minutes
Round difficulty - Easy
It was a L1 technical round where questions from DS algo were asked, along with my work exp and projects. It was a face to face video round with 2 panel members
You are provided with a 2-dimensional matrix having N
rows and M
columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...
Count the number of islands in a 2D matrix of 1s and 0s.
Use Depth First Search (DFS) or Breadth First Search (BFS) to traverse the matrix and identify connected groups of 1s.
Maintain a visited array to keep track of visited cells to avoid revisiting them.
Increment the island count each time a new island is encountered.
Consider all eight possible directions for connectivity between cells.
Handle edge cases like out of bo
Prevent breaking singleton pattern using reflections by throwing an exception in the private constructor.
Throw an exception in the private constructor if an instance already exists.
Use a flag to track if an instance has been created and throw an exception if an attempt is made to create another instance.
Use enums to create a singleton to prevent reflection attacks.
Round duration - 30 minutes
Round difficulty - Medium
It was a System design round and the interviewer was very friendly, he gave ample hints and it was a productive interaction.
Design an LRU cache to store and retrieve data based on least recently used policy.
Use a doubly linked list to keep track of the order of usage of the cache entries.
Maintain a hash map to quickly access the cache entries based on their keys.
When a new entry is accessed, move it to the front of the linked list to mark it as the most recently used.
If the cache is full, remove the least recently used entry from the end of...
Round duration - 45 minutes
Round difficulty - Easy
It was a standard manager where I was asked many questions related to my work exp and behavioural questions
Tip 1 : Focus on Core Java and development
Tip 2 : Practise easy -medium questions
Tip 1 : Projects should be well defined use bullet points
Tip 2 : Describe your work ex/ intern exp well
I listed a job that I was fired from after only a few weeks.
Listed a job where I was fired after a few weeks
Didn't provide a clear explanation for why I was let go
Didn't highlight any skills or accomplishments from that job
I admire Dr. Raghunath Anant Mashelkar, an IIT Bombay alumnus, for his contributions to science and technology.
Dr. Mashelkar is a chemical engineer and has made significant contributions to the field of polymer science.
He has also served as the Director General of the Council of Scientific and Industrial Research (CSIR) and has been awarded numerous honors, including the Padma Shri and Padma Bhushan.
Dr. Mashelkar has a...
The eurozone crisis refers to the economic and financial difficulties faced by some countries in the European Union.
The crisis began in 2009 with the Greek debt crisis and spread to other countries in the eurozone.
It was caused by a combination of factors including high levels of debt, low economic growth, and structural problems within the eurozone.
The crisis led to bailouts of several countries by the European Centra...
The Libor Scam was a manipulation of the London Interbank Offered Rate (Libor) by banks to benefit their own trading positions.
Libor is a benchmark interest rate used globally for financial products
Banks were found to have manipulated the rate to benefit their own trading positions
The scandal resulted in billions of dollars in fines for banks involved
Several high-profile bankers were also convicted for their involvemen...
Derivatives are financial instruments that derive their value from an underlying asset or security.
Derivatives can be used for hedging or speculation.
Examples of derivatives include futures, options, and swaps.
Derivatives can be traded on exchanges or over-the-counter.
Derivatives can be complex and involve significant risk.
Derivatives played a role in the 2008 financial crisis.
Failure to avoid fiscal cliff could lead to severe economic repercussions globally and in the US, with India also being affected.
The US economy could experience a recession, with a potential decrease in GDP and increase in unemployment rates
Global financial markets could experience volatility and uncertainty
India could be affected due to its close economic ties with the US, with potential impacts on trade and investmen...
Prime Services is a suite of financial services offered by investment banks to hedge funds and other institutional clients.
Prime brokerage
Securities lending
Cash management
Risk management
Trade execution
Reporting and analytics
Examples: Goldman Sachs Prime Services, J.P. Morgan Prime Services
QE stands for Quantitative Easing. It is a monetary policy used by central banks to stimulate the economy.
QE involves the central bank buying government bonds or other securities from the market to increase the money supply.
The increased money supply is intended to lower interest rates, encourage borrowing and spending, and boost economic activity.
QE is typically used when interest rates are already low and traditional...
posted on 4 Dec 2016
I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.
Yes, I have coded in curriculum. The most complex one was a project on building a web application using React and Node.js.
Built a full-stack web application using React and Node.js
Implemented user authentication and authorization using JSON Web Tokens (JWT)
Used MongoDB as the database and Mongoose as the ODM
Implemented real-time updates using Socket.IO
Deployed the application on Heroku
Handled errors and implemented log
Big data refers to large and complex data sets that cannot be processed using traditional data processing methods.
Big data is characterized by its volume, velocity, and variety
It is used in various industries such as healthcare, finance, and retail
Examples of big data include social media data, sensor data, and transactional data
It is called 'big' because it involves processing massive amounts of data
Big data requires ...
I am passionate about technology and eager to learn new skills in the IT sector.
I have always had a keen interest in technology and enjoy working with computers.
I believe the IT sector offers more opportunities for growth and advancement in my career.
I have seen the impact of technology on various industries and want to be a part of that innovation.
I have taken courses in programming and networking to prepare myself fo
To find the product of all data points using SelectSum(), log(), and exp() functions.
Use the log() function to convert the product into a sum of logarithms
Apply the SelectSum() function to calculate the sum of logarithms
Finally, use the exp() function to convert the sum back into the product
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