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I applied via Referral and was interviewed before Mar 2023. There was 1 interview round.
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
HashMap uses an array of buckets to store key-value pairs.
Each key is hashed to determine its index in the array.
If multiple keys hash to the same index, a linked list or tree is used to handle collisions.
HashMap allows null keys and values.
HashMap is not synchronized, use ConcurrentHashMap for thread-safe operations
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I applied via Referral and was interviewed before Apr 2023. There were 3 interview rounds.
Used an online IDE and asked general DS Algo questions
I appeared for an interview before Dec 2023.
Online assessment with quantitative and qualitative questions
Some Tree traversal coding question
I applied via Job Portal and was interviewed in Sep 2024. There were 4 interview rounds.
2 DSA question was asked
40 questions in 20 minutes
Generate all possible permutations of an array of strings
Use recursion to generate permutations
Swap elements to create different permutations
Base case: when array size is 1, return array as permutation
I applied via Walk-in and was interviewed before Mar 2021. There were 3 interview rounds.
Aptitude test
Current affairs
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
HashMap allows quick access to values based on their keys
Keys must be unique and values can be duplicated
HashMap is not thread-safe and requires synchronization for concurrent access
Java's HashMap implementation uses hashing to distribute keys across buckets
posted on 20 May 2021
I applied via Referral and was interviewed in Nov 2020. There were 4 interview rounds.
posted on 22 Aug 2022
3 Question based on strings, array & LinkedList
posted on 20 Nov 2022
I applied via LinkedIn
They asked five problems. We need to solve atleast three problems out of five.
They asked ten questions related to reasoning and quantitative aptitude.We need to solve atleast 7 out of 10.
based on 2 interviews
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