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I applied via Company Website and was interviewed in May 2021. There were 3 interview rounds.
Exceptions are errors that occur during program execution and can be handled using try-catch blocks.
Checked exceptions: must be handled or declared in the method signature
Unchecked exceptions: occur at runtime and do not need to be declared
Error: serious problems that cannot be handled, such as OutOfMemoryError
Examples: NullPointerException, ArrayIndexOutOfBoundsException
Exceptions should be handled gracefully to prevent application crashes.
Use try-catch blocks to catch exceptions.
Handle exceptions at the appropriate level of abstraction.
Log exceptions to aid in debugging.
Provide meaningful error messages to the user.
Avoid catching generic exceptions.
Use finally blocks to release resources.
Consider using custom exceptions for specific error conditions.
To create a custom read-only list, use the ReadOnlyCollection class in C#.
Create a List
Use the AsReadOnly() method to create a read-only wrapper around the list.
Use the ReadOnlyCollection
Example: List
Example: var readOnlyList = myList.AsReadOnly();
Example: var trulyReadOnlyList = new ReadOnlyCollect
Collections are data structures that store and manipulate groups of related objects.
Collections are used to store and manipulate groups of related objects
They can be classified into three main categories: Lists, Sets, and Maps
Lists maintain the order of elements and allow duplicates (e.g. ArrayList, LinkedList)
Sets do not allow duplicates and do not maintain order (e.g. HashSet, TreeSet)
Maps store key-value pairs and d...
Binary search is a search algorithm that finds the position of a target value within a sorted array.
The array must be sorted before applying binary search
Compare the target value with the middle element of the array
If the target value is smaller, search the left half of the array
If the target value is larger, search the right half of the array
Repeat until the target value is found or the search space is exhausted
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Write code for advance surrying in js
Implement custom hook for api call
I applied via Walk-in and was interviewed in May 2024. There was 1 interview round.
LRU cache with multi level caching involves implementing a cache with multiple levels of storage, where the least recently used items are evicted first.
Implement a two-level cache system with a primary cache (e.g. in-memory) and a secondary cache (e.g. disk-based).
Use a data structure like a doubly linked list and a hash map to efficiently manage the cache and track the least recently used items.
When an item is accesse...
posted on 9 Feb 2024
I was interviewed in Jan 2024.
I applied via Campus Placement
One medium and one standard DP question
Design Google Pay - a digital wallet platform for online payments and transactions.
Allow users to securely store payment information such as credit/debit cards, bank accounts, and loyalty cards.
Enable users to make payments in stores, online, and within apps using their stored payment methods.
Implement security features like biometric authentication, tokenization, and encryption to protect user data.
Provide features fo...
High Level Design (HLD) of recursive functions in software development.
Recursive functions call themselves to solve smaller instances of the same problem.
HLD of recursive functions involves defining the base case, recursive case, and termination condition.
Example: HLD of a recursive function to calculate factorial of a number involves defining base case as factorial(0) = 1.
I applied via campus placement at Indian Institute of Technology (IIT), Guwahati and was interviewed in Nov 2023. There were 4 interview rounds.
Mcqs based on cs fundamentals and 2_3 coding questions
Merge two sorted linked lists into one.
Create a new linked list to store the merged list.
Compare the values of the nodes from both lists and add the smaller value to the new list.
Move the pointer of the list with the smaller value to the next node.
Repeat the comparison and addition until one of the lists is empty.
Add the remaining nodes from the non-empty list to the new list.
Return the new merged list.
I applied via LinkedIn and was interviewed in Jun 2024. There were 2 interview rounds.
Data Structures Algorithms
Data Structures and Algorithm
Time ,speed ,distance
Java application using oops concept
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