Gainwell Technologies Senior Developer Interview Questions and Answers

Q1. Solve code snippets
Add your answer

Q1. Mvvm, oops, broadcast receiver, activity life cycle, aidl
Add your answer

Q1. Project experience,
Add your answer

Q1. Discussion of salary
Add your answer

DSA questions and programming concepts

Q1. Reverse string and optimize it
Ans. 
Reverse array of strings efficiently
• Use two pointers approach to swap characters from start and end of each string

• Optimize by using in-place reversal instead of creating new strings

• Consider edge cases like empty strings or strings with only one character
Answered by AI
Add your answer
Q2. Reverse binary tree
Add your answer

Q1. Salary expectations
Add your answer
Q2. Joining location
Add your answer

Q1. What is Concrete class ?
Ans. 
A concrete class is a class that can be instantiated, meaning it can be used to create objects.
• Cannot be abstract

• Can be instantiated

• Can have concrete methods and properties

• Example: class Car {}
Answered by AI
Add your answer

Hackerrank coding round.

Q1. Questions and coding testing your OOPS knowledge
Add your answer

Q1. Every tech stack, SQL, OOPS, JAVA
Add your answer

Q1. Tell me about your self
Add your answer
Q2. About technical questions
Add your answer
Q3. About current project
Add your answer

Q1. Question are about interview
Add your answer
Q2. Answers about interview
Add your answer