Signify Software Development Engineer Interview Questions and Answers

Round duration - 90 Minutes
Round difficulty - Medium

It was in the morning at our institute. There were technical and aptitude problems.

Q1. 
Star Pattern Generation
Develop a function to print star patterns based on the given number of rows 'N'. Each row in the pattern should follow the format demonstrated in the example.
The picture illustra...read more
Ans. 
Function to print star patterns based on the given number of rows 'N'.
• Iterate through each row from 1 to N

• For each row, print spaces (N-row) followed by stars (2*row-1)

• Repeat until all rows are printed
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Round duration - 30 Minutes
Round difficulty - Medium

It was actually a Techno HR round. I was asked some technical questions about OS, OOPS, COMPUTER NETWORKING, WEB DEVELOPMENT. He went through my whole resume, asked about all the projects and past working experiences. The interviewer was really good, we talked about so many other topics, from Women empowerment to Water Crises. I felt really confident while speaking because he made me so comfortable.

Q1. 
Selection Sort Algorithm
Selection sort is a sorting technique that works by repeatedly finding the minimum element (considering ascending order) from the unsorted part and placing it at the beginning of ...read more
Ans. 
Selection Sort Algorithm sorts an array by repeatedly finding the minimum element and placing it at the beginning of the unsorted part.
• Iterate through the array to find the minimum element and swap it with the first unsorted element.

• Repeat this process for each element in the array until it is fully sorted.

• Time complexity of Selection Sort is O(n^2) making it inefficient for large arrays.
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Round duration - 24 hours
Round difficulty - Easy

It was a hackathon we were given a problem statement and we had to solve that within 2 days. There were team of 4 people.

Q1. You had to build a chatbot. Can you describe the design process and the key considerations you took into account?
Ans. 
The design process for building a chatbot involves defining user goals, choosing a platform, designing conversation flow, implementing natural language processing, and testing for accuracy.
• Define user goals and objectives for the chatbot

• Choose a platform or framework for building the chatbot (e.g. Dialogflow, Microsoft Bot Framework)

• Design the conversation flow and user interactions

• Implement natural language processing...read more
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Round duration - 15 minutes
Round difficulty - Easy

HR round

Round duration - 120 minutes
Round difficulty - Easy

Round duration - 90 minutes
Round difficulty - Medium

The round contains mcqs on core java , javascript , oops and two coding questions of data structures.
The exam was at 7pm
Platform was good

Q1. 
Submatrix Sum Query
Given a 2-dimensional array ARR with 'N' rows and 'M' columns, and a set of queries in a 2-dimensional array Queries of size 'K', each query contains four integers that denote the top-...read more
Ans. 
Given a 2D array and a set of queries, find the sum of elements within specified submatrices for each query.
• Parse input to get array dimensions, elements, and queries

• Iterate through queries and calculate sum of elements within specified submatrix

• Output the sum for each query
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Q2. 
String Rotation Problem Statement
You are given a string named str and an integer D. Your task is to perform both left (anticlockwise) and right (clockwise) rotations on the given string by D units, start...read more
Ans. 
Implement functions to perform left and right rotations on a given string by a specified number of positions.
• Implement a function leftRotate() to perform left rotation on the string by D units.

• Implement a function rightRotate() to perform right rotation on the string by D units.

• Return the modified string after each rotation.

• Ensure to handle cases where D can be greater than the length of the string.
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They asked to find the elements which are present more than once. I solved it using map in c++

Q1. Explain about your favorite algorithm
Ans. 
My favorite algorithm is Dijkstra's algorithm for finding the shortest path in a graph.
• Dijkstra's algorithm is a greedy algorithm that finds the shortest path between nodes in a graph.

• It works by maintaining a priority queue of nodes to visit next, updating the shortest distance to each node as it explores the graph.

• The algorithm is commonly used in routing and network optimization.

• Example: Finding the shortest route b
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Q2. Tell about different types of deadlocks
Ans. 
Deadlocks occur when two or more processes are unable to proceed because each is waiting for the other to release a resource.
• Resource deadlocks: Processes hold resources and wait for others to release resources. Example: Process A holds resource X and waits for resource Y, while Process B holds resource Y and waits for resource X.

• Communication deadlocks: Processes wait for messages from each other indefinitely. Example...read more
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Q3. Tell about you project.
Ans. 
Developed a web application for online shopping with user authentication and payment gateway integration.
• Implemented user authentication using JWT tokens

• Integrated Stripe API for payment processing

• Designed responsive UI using React and Bootstrap
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Electrical engineering

Power system machine power electronics