Persistent Systems Senior Software Engineer Interview Questions and Answers

Binary search is a divide and conquer algorithm that efficiently finds the target value in a sorted array.

• Divide the array in half and compare the target value with the middle element

• If the target value is smaller, search the left half. If larger, search the right half

• Repeat the process until the target value is found or the subarray is empty

SDLC stands for Software Development Life Cycle. It is a process used by software development teams to design, develop, and test high-quality software.

• SDLC involves planning, designing, coding, testing, and deployment stages.

• It helps in ensuring that the software meets the requirements and is delivered on time and within budget.

• Examples of SDLC models include Waterfall, Agile, and DevOps.

• Each stage of SDLC has spe...read more

A state file is a file used to store the current state of a system or application.

• State files are commonly used in software development to save the current state of an application for later retrieval.

• They can be used to store variables, configurations, or other data that needs to persist between sessions.

• State files are often used in configuration management tools like Terraform to track the state of infrastructur...read more

Move all zeros in an array to the end while maintaining the order of other elements.

• Iterate through the array and move all zeros to the end while keeping the order of non-zero elements.

• Use two pointers approach to swap elements in-place.

• Example: Input [0, 1, 0, 3, 12], Output [1, 3, 12, 0, 0]

Joining a new team requires understanding the team dynamics and culture.

• Take time to observe and learn about the team's communication style and work processes.

• Be open to feedback and willing to adapt to the team's way of doing things.

• Build relationships with team members and establish trust through open communication.

• Ask questions and seek clarification to ensure a clear understanding of expectations and goals.

• Con...read more

Node.js is single-threaded to optimize performance and simplify programming.

• Node.js uses an event-driven, non-blocking I/O model.

• This allows for efficient handling of multiple requests without creating new threads.

• Node.js also uses a single event loop to manage all I/O operations.

• This simplifies programming by eliminating the need for complex thread synchronization.

• However, Node.js can still take advantage of mult...read more