Flexsin Technologies Odoo Python Developer Interview Questions and Answers

Q1. Regrading Self join query
Ans. 
A self join query is used to join a table to itself in a SQL query.
• Self join is used when a table needs to be joined with itself to compare rows within the same table.

• It requires aliasing the table with different names to distinguish between the two instances of the same table.

• Commonly used in hierarchical data structures or when comparing related rows in a table.
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Q2. Group by query per catagory
Ans. 
Group by query is used to group data based on a specific category.
• Use the GROUP BY clause in SQL to group data based on a specific column

• Aggregate functions like COUNT, SUM, AVG can be used with GROUP BY to perform calculations on grouped data

• Example: SELECT category, COUNT(*) FROM products GROUP BY category
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Basic coding excercise , linux platform.file handling

Q1. Simpe question , family baground,
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Q2. Strength , weakness,
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It was a MCQ + Coding test

Q1. Questions on DSA
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Q2. Questions on CS Fundamentals
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Q1. Questions on Linux commands
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Q2. Questions related to oops and CS is
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It was around 2 hrs with 2 coding questions and some mcq questions on fundamentals

Q1. Print some numbers in a tree format
Ans. 
Print numbers in a tree format
• Use recursion to print numbers in a tree structure

• Start with the root node and recursively print child nodes

• Use indentation to represent levels in the tree

• Example: 1 --2 ----3 --4
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Q2. Factorial of a number, both iterative and recursive
Ans. 
Factorial of a number can be calculated using both iterative and recursive methods.
• Iterative method involves using a loop to multiply numbers from 1 to n.

• Recursive method involves calling the function with n-1 until n reaches 1.

• Example: Factorial of 5 using iterative method: 5! = 5*4*3*2*1 = 120

• Example: Factorial of 5 using recursive method: 5! = 5 * 4!

• Example: Factorial of 4 using recursive method: 4! = 4 * 3!
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Q1. To write any code in any programming language
Ans. 
This code demonstrates a simple Python function to calculate the factorial of a number using recursion.
• Define a function named 'factorial' that takes one argument 'n'.

• Check if 'n' is less than or equal to 1; if so, return 1.

• Otherwise, return 'n' multiplied by 'factorial(n-1)'.

• Example: factorial(5) returns 120.
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Q2. About the project work that i have done
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Q1. Time was 3:15 in the clock write an code to find the angle between the hour and minute hand
Ans. 
Calculate the angle between the hour and minute hands of a clock at 3:15.
• Each hour on the clock represents 30 degrees (360 degrees / 12 hours).

• Each minute represents 6 degrees (360 degrees / 60 minutes).

• At 3:15, the hour hand is at 97.5 degrees (3 hours * 30 + 15 minutes * 0.5).

• The minute hand is at 90 degrees (15 minutes * 6).

• The angle between the hands is the absolute difference: |97.5 - 90| = 7.5 degrees.
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Q2. About the project work
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Q1. Implement a linked list
Ans. 
A linked list is a data structure that consists of a sequence of nodes, each containing a reference to the next node.
• Each node has a data field and a next field that points to the next node

• Insertion and deletion can be done efficiently

• Traversal starts from the head node and continues until the end node is reached
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Q2. Questions on JAVA
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It placed in hackerRank.question difficulty level was medium.

Q1. The difficulty depends upon who is taking your interview. But mostly asked questions were related to string and hashmap.
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Q1. It was more like a little bit technical and hr round. Mostly talk about personal profile like education,family background, hobbies and etc.
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Medium level leetcode

Q1. Basics of linked list. How to delete without head and address of current node is given?
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Q2. Simple join queries on 2 to 3 tables?
Ans. 
Join queries are used to combine data from multiple tables based on a related column between them.
• Use JOIN keyword to combine tables based on a common column

• Specify the columns to select from each table

• Use WHERE clause to specify the join condition
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