HARMAN Interview Questions and Answers

Q1. Write a method for deletion of a node from a Linked List.
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Q2. A extends B, B extends C, C extends A. Us it possible in Java? Why?
Ans. 
No, it is not possible in Java due to circular inheritance.
• Circular inheritance is not allowed in Java.

• It creates an infinite loop and leads to compile-time errors.

• To avoid this, inheritance hierarchy should be designed carefully.

• Example: Class A extends B, B extends C, and C extends D.

• This creates a linear inheritance hierarchy and is allowed in Java.
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Q3. How to make a custom immutable class in java?
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Q4. Write a code to check if two strings are anagrams of each other.
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Q5. Time complexity of linked lists operations
Ans. 
Time complexity of linked list operations is O(n) for traversal, insertion and deletion.
• Traversal, insertion and deletion in linked lists take linear time.

• Insertion and deletion at the beginning of the list is faster than at the end.

• Doubly linked lists have slightly higher time complexity due to maintaining two pointers.
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Everything was fine. The Hr was nice and the manager also.

Q1. What is your experience from your previous work?
Ans. 
I have 5 years of experience working as a Test Engineer in the software industry.
• Developed and executed test cases to ensure software quality

• Performed regression testing to identify bugs and issues

• Collaborated with developers to resolve defects and improve product performance
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Q2. Mx experience from my previous work
Ans. 
I have 5 years of experience working as a Test Engineer in the software industry.
• Developed and executed test cases to ensure software quality

• Performed regression testing to identify bugs and issues

• Collaborated with developers to resolve issues and improve product quality
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Q1. Explain activity lifecycle
Ans. 
Activity lifecycle refers to the series of states an activity goes through during its lifetime in an Android app.
• onCreate() - activity is created

• onStart() - activity becomes visible to the user

• onResume() - activity is interacting with the user

• onPause() - activity is partially visible but still running

• onStop() - activity is no longer visible to the user

• onDestroy() - activity is being destroyed
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Q2. MVVM Architecture explain
Ans. 
MVVM is an architectural pattern used in software development, particularly in Android apps, to separate the user interface from the business logic.
• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View is the UI component that displays the data and interacts with the user

• ViewModel acts as a mediator between the Model and the View, handling user interactions and updating the Model

• MVVM help...read more
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Basic string questions
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Q1. About the project
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Q2. Basics of c++ that make differ in c
Ans. 
C++ extends C with object-oriented features, stronger type checking, and standard libraries, enhancing code organization and reusability.
• Object-Oriented Programming: C++ supports classes and objects, allowing encapsulation and inheritance. Example: class MyClass { ... };

• Function Overloading: C++ allows multiple functions with the same name but different parameters. Example: void func(int); void func(double);

• Operator Ov...read more
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