Datamate Infosolutions Software Developer Interview Questions and Answers

Q1. 2 sum in array
Ans. 
The Two Sum problem involves finding two numbers in an array that add up to a given target value.
• Iterate through the array and store the difference between the target and current element in a hashmap

• Check if the current element exists in the hashmap, if yes return the indices

• Time complexity can be reduced to O(n) using a hashmap
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Q2. Reverse a linked list
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Q3. In given time slots , find conflicting time slots
Ans. 
Identify overlapping time slots from a list of scheduled appointments.
• Sort the time slots by start time.

• Iterate through the sorted list and compare each slot with the next one.

• If the start time of the next slot is less than the end time of the current slot, they conflict.

• Example: Slots [(1, 3), (2, 4)] conflict because 2 < 3.
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Q1. Asked about projects
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Q2. Longest palindrome
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Strong appitude knowledge is required.

Q1. String , arrays, oops
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Q1. Strecture of sql statement
Ans. 
SQL statements are used to interact with databases by performing operations like querying, updating, and deleting data.
• SQL statements are made up of keywords like SELECT, INSERT, UPDATE, DELETE, etc.

• They are structured in a specific order, with clauses like WHERE, ORDER BY, GROUP BY, etc.

• Tables are referenced using their names, and conditions are specified to filter data.

• Joins can be used to combine data from multiple ...read more
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Q1. What your exp?
Ans. 
I have over 5 years of experience in software development, specializing in web applications and cloud technologies.
• Developed a full-stack web application using React and Node.js, improving user engagement by 30%.

• Led a team of 4 developers in creating a microservices architecture for a scalable e-commerce platform.

• Implemented CI/CD pipelines using Jenkins and Docker, reducing deployment time by 50%.

• Worked with Agile met...read more
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Q2. What is you total exp?
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Q1. More than technology,a senior recruiter asks where you stay which gali you stay,which temple is near by,what your husband do,getting into more personal and final he will ask your janam kundali and tell you...read more
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Q1. Senior recruiter will ask more personal questions
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Q1. Ofdm, equalization, estimation
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