Supermoney (GetClarity Fintech Services) Senior Backend Developer Interview Questions and Answers

Q1. Design a movie ticket booking system(LLD)
Ans. 
Design a movie ticket booking system
• Use case: Users can search for movies, select showtimes, choose seats, and make payments

• Components: User authentication, movie database, showtime scheduling, seat selection, payment gateway

• Considerations: Seat availability, seat selection algorithm, payment security
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Q1. 2 medium DSA ques
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Q1. Hiring Manager round about projects indepth discussion
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3 Leetcode style questions , 2 medium , 1 hard .

Q1. Design a cab booking system using oops
Ans. 
A cab booking system designed using OOP principles
• Create classes for Cab, Customer, Driver, and Booking

• Use inheritance and polymorphism to handle different types of cabs and bookings

• Implement methods for booking a cab, assigning a driver, and calculating fare

• Use encapsulation to protect data and ensure data integrity
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It was a machine coding round which revolves around designing a simple application primarily on OOPS

Q1. Best time to sell stocks
Ans. 
The best time to sell stocks is when the market is high and the stock has reached its peak value.
• Sell when the stock has reached its peak value to maximize profits

• Consider selling if the company's fundamentals have changed negatively

• Sell if you need to rebalance your portfolio or have reached your financial goals
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Q2. Best time to sell stocks 2
Ans. 
The best time to sell stocks is when the market is at a peak and the stock price is high.
• Monitor market trends and stock performance regularly.

• Consider selling when the stock reaches a new high or when you have achieved your profit goals.

• Sell if there are negative news or events that could impact the stock price negatively.
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Given two soted arrays merge them from a single sorted array with all items in non-decreassing order

Q1. Smallest integer in unsorted array
Ans. 
Find the smallest integer in an unsorted array.
• Iterate through the array and keep track of the smallest integer found so far.

• Use a for loop or a stream to iterate through the array.

• If the array is empty, return null or throw an exception.

• If the array contains only one element, return that element.
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Q2. Verify whether a Palindrome list
Ans. 
A palindrome list is a list that reads the same backward as forward.
• Traverse the list and store the elements in an array

• Compare the first element with the last element, second with second last and so on

• If all elements match, then the list is a palindrome
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Round duration - 60 minutes
Round difficulty - Easy

This was a technical interview round with questions on DSA, OOPS and Low Level design.

Q1. 
Vertical Order Traversal of a Binary Tree
Given a binary tree, your task is to return the vertical order traversal of its nodes' values.
For each node located at a position (X, Y), its left child will be...read more
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Q2. Why is Java considered an Object Oriented Programming Language?
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Q3. What are indexing and partitioning in DBMS?
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