ViTWO - 6 Livo Technologies Private Limited Fullstack Developer Intern Interview Questions, Process, and Tips

The worst case time complexity of merge-sort is O(n log n).

• Merge-sort divides the array into two halves, recursively sorts them, and then merges them back together.

• In the worst case scenario, the array is divided log n times and each division takes O(n) time.

• Therefore, the worst case time complexity of merge-sort is O(n log n).

Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.

• Dependency injection helps in achieving loose coupling between classes.

• It allows for easier testing by providing mock dependencies.

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

Functional interface is an interface with only one abstract method, used in Java to achieve functional programming.

• Functional interface has only one abstract method, but can have multiple default or static methods.

• It can be annotated with @FunctionalInterface to ensure it has only one abstract method.

• Functional interfaces are used in Java to enable functional programming features like lambda expressions.

• Examples of fun...read more

No, databases cannot be stored using only POST requests.

• Databases are typically stored on a server or in the cloud, not through HTTP requests.

• POST requests are used to send data to a server, not to store databases.

• Database management systems like MySQL, PostgreSQL, or MongoDB are used to store and manage databases.