GoComet Backend Developer Interview Questions and Answers

LinkedList question: find cycle in a lickedlist

Standard dsa questions, easy to medium

Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
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Q2. Some coding questions
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70 questions in 90 minutes with 7 sections

Q1. Introduce yourself
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Q2. Project description
Ans. 
Developed a web application for tracking project progress and managing tasks
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database storage

• Incorporated authentication and authorization features for user security
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Q3. Second highest salary
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To find the second highest salary in a table, you can use a SQL query with the MAX() function and a subquery.
• Use a SQL query to select the MAX() salary from the table.

• Use a subquery to select the MAX() salary that is less than the overall MAX() salary.

• Combine both queries to get the second highest salary.
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Q4. What is indexing
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Indexing is a technique used to optimize the performance of databases by creating a data structure that allows for quick retrieval of data.
• Indexing involves creating a data structure that maps the values of specific columns in a database table to their physical location on disk.

• It helps in speeding up data retrieval operations by allowing the database to quickly locate the rows that match a certain condition.

• Examples o...read more
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Q1. Introduce yourself
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java, Python, and web development technologies

• Strong problem-solving skills

• Team player with excellent communication skills
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Q2. Project description
Ans. 
Developed a web application for tracking project progress and managing tasks
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database storage

• Incorporated authentication and authorization features for user security
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Q3. Difference between truncate and delete
Ans. 
Truncate is a DDL command that removes all records from a table, while delete is a DML command that removes specific records.
• Truncate is faster than delete as it does not log individual row deletions.

• Truncate resets the identity seed of the table, while delete does not.

• Truncate cannot be rolled back, while delete can be rolled back using a transaction.

• Truncate does not fire triggers, while delete does.
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Q1. Why you join company
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Q2. Where you see yourself after 5 years
Ans. 
In 5 years, I see myself as a senior software developer leading a team and working on cutting-edge technologies.
• Leading a team of developers on innovative projects

• Continuing to enhance my technical skills and knowledge

• Contributing to the growth and success of the company

• Possibly pursuing further education or certifications in software development
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Q1. Jump Game - II
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Q2. Number of Island
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Count the number of islands in a given grid of '1's and '0's.
• Iterate through the grid and for each '1' encountered, perform a depth-first search to mark all connected '1's as visited.

• Increment the island count for each new island encountered.

• Consider edge cases like grid boundaries and handling visited cells.
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