Signzy Technologies Software Developer Interview Questions and Answers

Medium to hard questions based on arrays, dp

Q1. Quick sort algorithm
Ans. 
Quick sort is a popular sorting algorithm that uses divide and conquer strategy.
• Divides array into smaller sub-arrays based on a pivot element

• Recursively sorts sub-arrays

• Combines sorted sub-arrays to get final sorted array

• Time complexity: O(n log n) on average, O(n^2) worst case

• Example: [3, 6, 8, 10, 1, 2, 1] -> [1, 1, 2, 3, 6, 8, 10]
Answered by AI
Add your answer
Q2. Modified rotate a matrix
Ans. 
Rotate a matrix by 90 degrees in place
• Transpose the matrix

• Reverse each row of the transposed matrix
Answered by AI
Add your answer

2 Query question and 3 coding questions

Q1. Basic oops , Java script and Networking questions.
Add your answer
Q2. What is object orienteered programming.
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: Java, C++, Python are popular languages that support object oriented programming.
Answered by AI
Add your answer
Q3. Different Events in java script
Ans. 
Events in JavaScript are actions or occurrences that happen in the browser that the code can respond to.
• Events can be triggered by user actions (like clicking a button), browser actions (like page load), or system events (like a timer expiring)

• Event listeners are used to listen for and respond to events

• Common events include click, mouseover, keydown, submit, etc.
Answered by AI
Add your answer
Q4. Event listeners
Add your answer

Project , coding question, DBMS

Q1. Basic personal details
Add your answer

2 DSA questions Both are from DP

Q1. 2 Questions , 1 is DSA
Add your answer
Q2. Second question is Puzzle
Add your answer

There were 5 question out of which 2 were coding Data Structure problems , 1 was SQL based , 1 was AI based Problem ( Machine Learning ) and 1 was to create UML Diagram.
First Coding question was pretty easy , other one was kinda tough , UML Diagram was also easy and SQL query was of moderate level.

Q1. What is Nodejs and how is it useful + 1 leetcode hard problem
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side, making it useful for building scalable network applications.
• Node.js is built on Chrome's V8 JavaScript engine and uses an event-driven, non-blocking I/O model, making it lightweight and efficient.

• It is commonly used for building web servers, APIs, real-time applications, and microservices.

• Node.js has a large ecosystem of libraries an...read more
Answered by AI
Add your answer

1 hr and it is pretty easy and having snippets technical questions etc

I didn't selected for second round