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Wissen Technology
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I applied via Approached by Company
I was interviewed before Mar 2024.
When I was join there no assignment I think now they conducting
Objective technical question was given.
Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
HashMap in Java implements the Map interface and allows null keys and values.
It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.
Example: HashMap
I applied via LinkedIn and was interviewed in Dec 2023. There was 1 interview round.
A transaction in Java is a unit of work that is performed as a single, indivisible operation.
Transactions ensure data integrity by either committing all changes or rolling them back if an error occurs.
Transactions are typically used in database operations to ensure consistency.
In Java, transactions are commonly implemented using frameworks like Spring's @Transactional annotation.
posted on 9 Jan 2023
Find the second largest element from the array.
Sort the array in descending order and return the second element.
Iterate through the array and keep track of the two largest elements.
Use a priority queue to find the second largest element.
Sort array and return second last element
Use built-in sort function
Access second last element using array index -2
I applied via Recruitment Consulltant and was interviewed in Nov 2021. There were 4 interview rounds.
Live coding on my technology
based on 1 interview
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