Qualix Information System LLP Engineer Interview Questions and Answers

Basic array and string based questions.

Q1. Basics of OOPS and resume.
Add your answer
Q2. Reverse a string without using new variable
Ans. 
Reverse a string without using new variable
• Use two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move the pointers towards each other until they meet in the middle
Answered by AI
Add your answer

Online assignment questions was easy

Q1. Java MySQL spring questions asked
Add your answer

Q1. Mostly on OOP's basic and some tricky questions related SOLID concepts
Add your answer

Leet code medium level question

Q1. About Java Streams
Add your answer
Q2. Restful API coding completion based on given file
Add your answer

Q1. To check your attitude
Add your answer
Q2. Given detailed about company and what project you are going to work on?
Add your answer

Q1. Hashmap working
Ans. 
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap uses a hashing function to map keys to indices in an array.

• It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.

• Example: HashMap<String, Integer> map = new HashMap<>(); map.put("key", 123); int value = map.get("key");
Answered by AI
Add your answer
Q2. Multithreading cases
Add your answer
Q3. Scenario specific on how to handle multiple events on a single variable to have accurate result
Add your answer
Q4. Database indexing
Add your answer
Q5. Architecture level
Add your answer