Alstom Transportation Senior Design Engineer Interview Questions and Answers for Freshers

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