Godawari Electric Motors Senior R&D Engineer Interview Questions and Answers

Android architecture stack is a set of layers that make up the Android operating system.

• The stack includes four main layers: Linux kernel, native libraries, Android runtime, and application framework.

• The Linux kernel provides low-level system functionality.

• Native libraries are written in C or C++ and provide access to hardware-specific features.

• The Android runtime includes the Dalvik virtual machine and core libraries.

• ...read more

AIDL stands for Android Interface Definition Language, used for inter-process communication in Android.

• AIDL is used to define the interface between client and service in Android.

• It allows communication between different processes in Android.

• AIDL is used to pass complex data types between processes.

• AIDL is similar to Remote Procedure Call (RPC) in other programming languages.

• Example: AIDL is used in Android to implement...read more

Hash set and hash map are data structures used to store key-value pairs for efficient retrieval.

• Hash set stores unique values without any specific order.

• Hash map stores key-value pairs and allows fast retrieval of values based on keys.

• Both use hashing to map keys to their corresponding values.

• In Java, HashSet and HashMap are implementations of these data structures.

Dependency injection is a design pattern where the dependencies of an object are provided externally.

• Dependencies are objects that a class needs to function properly

• Dependency injection allows for loose coupling between objects

• There are three types of dependency injection: constructor injection, setter injection, and interface injection

• Example: Instead of creating a new instance of a dependency within a class, the depe...read more

Steam API is a set of tools and resources for game developers to integrate Steam features into their games.

• Steam API provides access to features such as matchmaking, achievements, and user profiles.

• Developers can use Steamworks SDK to integrate Steam features into their games.

• Steam API also allows for in-game purchases and microtransactions.

• Examples of games that use Steam API include Counter-Strike: Global Offensive a

HashMap is a data structure that stores key-value pairs and uses hashing to retrieve values quickly.

• Hashing function is used to convert the key into an index of an array where the value is stored.

• Collisions occur when two keys have the same hash value, which is resolved using separate chaining or open addressing.

• HashMap uses an array of linked lists to handle collisions.

• The load factor determines when the HashMap shoul...read more