Amazon Production Engineer Interview Questions and Answers

Q1. What is quality.
Ans. 
Quality is the measure of excellence or superiority of something.
• Quality is meeting or exceeding customer expectations.

• It involves consistency, reliability, and durability.

• Quality can be subjective and may vary depending on the context.

• Examples of quality in production engineering include precision machining, efficient processes, and reliable products.
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2 c++ coding questions will be asked based on the STL and array operations

Q1. Project manager will ask you project related knowledge.
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Q1. Will discuss basic HR round questions and discuss salary.
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Group discussion

Q1. Basic array question
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Q1. Find the first circular tour that visits all petrol pumps
Ans. 
The first circular tour that visits all petrol pumps can be found using the concept of a circular linked list.
• Create a circular linked list with each node representing a petrol pump

• Calculate the difference between petrol available at each pump and the distance to the next pump

• Start from a pump where the sum of differences is positive and traverse the circular linked list until completing the tour
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Q1. Level order tree traversal
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Q2. Find the pair element from the array
Ans. 
Find the pair element from the array
• Iterate through the array and use a hashmap to store elements and their counts

• Check if the current element's complement exists in the hashmap

• Return the pair if found, otherwise return null
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Reverse a stack without using extra space

Q1. Convert Roman to Integer
Ans. 
Convert Roman numerals to integers using a mapping of values for each symbol.
• Create a mapping of Roman numeral symbols to their corresponding integer values.

• Iterate through the input Roman numeral string from right to left.

• If the current symbol's value is less than the next symbol's value, subtract it from the total. Otherwise, add it to the total.
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Q2. Mid of linked list
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We had an aptitude test which involved 60 questions in 15 minutes. Of course, no one can solve this fast, but it was about the hit rate / accuracy and volume. Subsequent followed with two guesstimate based rounds and final as HR round which involved asking about college projects, extra curricular experiences and so on.