TCS iON BPO Associate Interview Questions and Answers

Level was easy to medium you can easily clear it if you have basic knowledge.

Level was medium you should have strong command of your respective language.

3 Coding Questions were asked

Artificial Intelligence

Q1. SQL QUERIES nested and joins
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Q2. Internships projects questions and tech stacks
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One simple coding test and general aptitute

Q1. Matrix multiplication, reverse a array. Puzzels.
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Q2. Reverse array elements
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Q3. Puzzle available on google
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The aptitude test contains questions MCQs for quants, basic statistics and basic coding questions. The aptitude also has 2 coding problems to solve which would be of easy-medium level.

The second round was live coding test, where the interviewer looks for your approach towards solving a given problem. The approach matters more than the correct syntax. All coding languages were allowed. SQL queries can also be asked.

Q1. Technical cum HR round contains language specific questions as well questions based on mathematics and statistics. Questions can be little bit tricky.
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1st Round consisted of Technical Discussion and Coding Round. I was asked to write down the logic for Prime no., Fibonacci Series, Matrix related question, etc.

I was asked to share my screen and write down logic for questions related to Strings, Arrays and 2-D matrix's.

Q1. Discussion About the previous projects done. Detailed questions about the technique used and algorithm related questions.
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Q2. Few basic questions about ML. eg: Linear Regression, Logistic Regression, etc.
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Aptitude ques based on straight line, circle,pnc, probability

Coding ques level was medium to tough. Had to solve 3 ques out of 5

Q1. Buy and sell stocks to earn maximum profit. It is available on leetcode
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Q2. Rotate two dimensional array
Ans. 
Rotate a 2D array by 90 degrees clockwise or counterclockwise.
• Transpose the matrix by swapping elements across the diagonal

• Reverse each row or column depending on clockwise or counterclockwise rotation

• Example: [[1,2],[3,4]] rotated clockwise becomes [[3,1],[4,2]]
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