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I applied via Company Website and was interviewed in Jan 2022. There were 4 interview rounds.
I applied via Referral and was interviewed in Dec 2021. There was 1 interview round.
To make a Java class immutable, use final keyword and initialize all fields in constructor.
Use final keyword for class and all fields
Initialize all fields in constructor
Do not provide setter methods
Make sure to return a new instance in any method that modifies the state
Check if two strings are anagrams of each other
Create a character count array for both strings
Compare the character count arrays
If they are equal, the strings are anagrams
REST endpoints for a ticket booking system
GET /events - get list of available events
GET /events/{id} - get details of a specific event
POST /events/{id}/tickets - book tickets for an event
GET /bookings - get list of all bookings
GET /bookings/{id} - get details of a specific booking
PUT /bookings/{id} - update a booking
DELETE /bookings/{id} - cancel a booking
Pessimistic locking is when a resource is locked for a long time, while optimistic locking is when a resource is locked only when it is being modified.
Pessimistic locking involves locking a resource for a long time to prevent other users from accessing it.
Optimistic locking involves locking a resource only when it is being modified, allowing other users to access it in the meantime.
Pessimistic locking is useful when co...
I applied via Company Website and was interviewed before Apr 2022. There were 4 interview rounds.
Shorten URL design involves generating a unique short code for a long URL to save space and improve usability.
Use a hashing algorithm to generate a unique short code for each URL
Store the mapping between short code and long URL in a database
Redirect users to the long URL when they access the short URL
Consider adding expiration time for short URLs to prevent abuse
Provide analytics to track usage of short URLs
Java performance and query optimization in Oracle
Use prepared statements to avoid SQL injection and improve performance
Use indexes to speed up query execution
Avoid using SELECT * and only select necessary columns
Use connection pooling to reuse database connections
Use caching to reduce database round trips
Tune database parameters like buffer cache and shared pool size
Use profiling tools to identify performance bottlenec
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A generic swap function swaps two values of any data type.
The function should take two parameters of any data type.
Use a temporary variable to store the value of one parameter.
Assign the value of the second parameter to the first parameter.
Assign the value of the temporary variable to the second parameter.
Search for an element in a rotated sorted linked list.
Find the pivot point where the list is rotated.
Divide the list into two sublists based on the pivot point.
Perform binary search on the appropriate sublist.
Handle edge cases such as empty list and list with only one element.
Search an element in a rotated sorted array
Find the pivot point where the array is rotated
Divide the array into two sub-arrays based on pivot point
Perform binary search on the appropriate sub-array
Repeat until element is found or sub-array size is 1
Find 5 missing numbers in an array of size 95 containing numbers in range 1 to 100.
Create a boolean array of size 100 and mark the present numbers
Iterate through the boolean array and find the missing numbers
Alternatively, use a HashSet to store the present numbers and find the missing ones
Given a Sudoku board, find possible numbers for an empty cell.
Iterate through empty cells and check possible numbers using row, column, and box constraints.
Use a set to keep track of possible numbers for each empty cell.
Return the set of possible numbers for the given empty cell.
Find integer average of 4 unsigned integers without typecasting
Add all the integers and divide by 4
Use bit shifting to divide by 4
Handle overflow by using long long data type
Use unsigned int data type for input
Code to identify 32 bit or 64 bit architecture of a processor
Check if the operating system is 32 bit or 64 bit
If OS is 32 bit, processor is 32 bit
If OS is 64 bit, check if processor supports 64 bit architecture
Use CPUID instruction to check if processor supports 64 bit architecture
Convert binary number to base 64 integer
Divide the binary number into groups of 6 bits
Convert each group of 6 bits to decimal
Map the decimal value to the corresponding base 64 character
Concatenate the base 64 characters to form the final integer
I applied via Coupa and was interviewed in Aug 2024. There were 2 interview rounds.
15 MCQs of two different sessions. They also has session isolated timings.
3 Coding questions of easy and medium level.
I applied via LinkedIn and was interviewed in Apr 2024. There were 4 interview rounds.
Aptitude+3 easy to medium level coding questions
posted on 28 Feb 2022
I applied via LinkedIn and was interviewed in Aug 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Jun 2023. There were 5 interview rounds.
Use the tilt method to pour exact half water from one container to other without measurements.
Fill both containers with water
Tilt one container slowly until water reaches the halfway mark
Stop pouring when the water level reaches halfway in the other container
The dog will take 28 days to reach the ground.
The dog climbs 1 foot (3 feet climb - 2 feet drop) each day.
It needs to climb 30 feet to reach the ground.
So, it will take 30 days to climb 30 feet, but it will already be on the ground on the 28th day.
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Hyderabad / Secunderabad,
Bangalore / Bengaluru
5-8 Yrs
Not Disclosed
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SAP
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