Ideas2IT Technologies Senior Java Developer Interview Questions and Answers

Please inquire about the fundamentals of computer science, including object-oriented programming, data structures and algorithms, database management systems, and computer networks.

Q1. Cs fundamental questions
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Q1. Coding + design
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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]
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Q2. Modified rotate a matrix
Ans. 
Rotate a matrix by 90 degrees in place
• Transpose the matrix

• Reverse each row of the transposed matrix
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Q1. Java script, React JS
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Q2. Data structures and algorithms
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Q1. Tell me about yourself, availability, visa-related questions
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Dynamic programming questions, longg time to complete the 2 questions

Problem solving : a clock with 3 hands, no numbers written, guess what it is

It was the ask mostly about DSA

Online technical aptitude test

Q1. Related oops and old company projects
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Interview for backend developer with experience in django

Q1. Writing ORM queries in django
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Q2. Database design with foregin and many to many fields
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Q3. Explain django's request response flow
Ans. 
Django's request response flow involves the request being handled by URL dispatcher, views, middleware, and templates before generating a response.
• Request is received by URL dispatcher which maps the URL to a view function

• View function processes the request, interacts with models if needed, and returns a response

• Middleware can intercept the request and response for additional processing

• Templates are used to generate HT
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