OPPO Maintenance Engineer Interview Questions and Answers

Q1. About your current company & your role in there, major activity of your which helping your department.
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Q2. Draw some case study & explain improvements which you have done there
Ans. 
Improved efficiency of production line at XYZ manufacturing plant
• Implemented lean manufacturing principles to reduce waste and increase productivity

• Introduced automation in certain processes to reduce manual labor and increase accuracy

• Optimized supply chain management to ensure timely delivery of raw materials

• Trained and empowered employees to identify and solve problems on the production line

• Implemented a continuous i...read more
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Q1. Where do you see yourself in 5 years?
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Q2. What are your salary expectations?
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Q3. What is your family background?
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Q4. Share details of your previous job.
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Q5. Why should we hire you?
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Q6. Why are you looking for a change?
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Q7. What are your strengths and weaknesses?
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Q8. Tell me about yourself.
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Question was related to dynamic programming. There was only one question and I had solve it within 4 hours. There were 50 test cases. All test cases must pass.

Q1. Basic Java questions and some behavioural questions.
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Q1. Behavioural questions.
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It was 1 coding question with 10 test cases. They asked a question based on binary search. I got 3 hrs to clear that test. I went in as a campus fresher. For lateral joinees, it is a much more difficult question that you have to clear in 4hrs.

Q1. What's the best way to find majority element in an array?
Ans. 
The best way to find the majority element in an array is by using the Boyer-Moore Voting Algorithm.
• Initialize a candidate variable and a count variable.

• Iterate through the array and for each element:

• - If the count is 0, set the current element as the candidate.

• - If the current element is the same as the candidate, increment the count.

• - Otherwise, decrement the count.

• After the iteration, the candidate will be the ...read more
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Q2. Reverse a linked list in K groups.
Ans. 
Reverse a linked list in K groups
• Iterate through the linked list in groups of size K

• Reverse each group of nodes using a temporary pointer

• Connect the reversed groups to form the final reversed linked list
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