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Sr Developer Interview Questions
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Design a shopping cart. Defend your decisions. Additionally, string compression algorithm, design a system to scale to 10,000 users, word reverse with preserved white space.
Implement a linked list. Now implement a method to reverse the elements of a linked list.
1. How can you manage thousands of requests at the same time? All the requests cannot be processed at the same time. How are you gonna keep them waiting? Explain the architecture. 2. A global variable `x` is initialized to `0`. A function `f()` has a loop which runs from i=0 to 5 and increments value of `x` at each iteration. If `f()` is called once, when `f()` completes, the value of `x` will be 5. Now in our `main()` function, we create another loop which runs from j=0 to 5 and create a new thread in each iteration, and each thread calls `f()`, what is the maximum and minimum possible value of `x` after this loop ends? 3. I had a project on my resume in which I had implemented traffic distribution to different servers using percentages. For ex. if I have 3 servers A,B and C and I need to distribute 20,50 and 30% of traffic to each respectively, I could configure my system to do that distribution approximately. It is possible that there may be fluctuation of 3-4% at the end of the day in the distribution. So instead of A getting 20%, it gets only 18% while C gets 32% of the traffic. So the interviewer asked me to implement a system that distributes traffic to my servers strictly as configured and not approximately. Then also added a use case that what happens if I introduce a server D and want to divert exactly 1000 requests to it per hour? Not percentage wise but request count wise this time. 4. A new user signs up and a new integer id is to be assigned to a newly created user. And this needs to happen in parallel. And needs to be replicated across 5 data centers. Design a system to do the same. 5. Design an elevator system. Draw class diagram for same. The elevator system of the office building was very high-tech. If you are at elevator labelled `G` and you press the up button, you won't necessarily get elevator `G` but you might end up getting elevator labelled `F` if `F` is nearer.
1. Java 8 questions 2. Overloading, overriding 3. Exception 4. Internal working of java 8 stream api 5. Java 8 date & time que and internal working Overall easy questions, basic core java interview questions Client interview - hashmap , linked hashmap internal working
methods in Object class of java?
* 2D row and column wise sorted matrix, find kth maximum.(with negative values also in consideration)
How do you deal with sensitive financial data of a user on your device?
How to get the data from more than 3 table without use join ?
Difference between ID and Class
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