Skylark Drones Back End Engineer Interview Questions and Answers

Q1. How python dictionary is implemented internally ?
Ans. 
Python dictionary is implemented using hash tables.
• Python dictionary is a collection of key-value pairs.

• The keys in a dictionary must be unique and immutable.

• The values in a dictionary can be of any data type.

• Python dictionary is implemented using hash tables.

• Hash tables provide constant time complexity for insertion, deletion and retrieval of elements.

• The hash function used in Python dictionary is based on the key's h...read more
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Q2. What is heap sort
Ans. 
Heap sort is a comparison-based sorting algorithm that uses a binary heap data structure.
• It divides the input into a sorted and an unsorted region.

• It repeatedly extracts the maximum element from the unsorted region and inserts it into the sorted region.

• It has a time complexity of O(n log n) and is not stable.

• Example: [8, 5, 3, 1, 9, 6, 0, 7, 4, 2] -> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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Q3. Coding question to sort array based on a custom filter
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Q1. Languages known
Ans. 
I am fluent in English, Spanish, and French.
• English

• Spanish

• French
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Q1. How to calculate requirement of Banana is a city like Mumbai
Ans. 
The requirement of bananas in a city like Mumbai can be calculated based on population, consumption habits, and availability.
• Calculate the population of Mumbai

• Estimate the average consumption of bananas per person

• Consider factors like tourism and events that may increase demand

• Take into account the availability of bananas from local markets and imports
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Q2. How to know , difference between a good or bad retailer
Ans. 
A good retailer focuses on customer satisfaction, product quality, and efficient operations.
• Good retailers prioritize customer satisfaction by providing excellent customer service and addressing customer needs.

• Good retailers offer high-quality products that meet customer expectations.

• Good retailers have efficient operations, including inventory management, supply chain logistics, and streamlined processes.

• Bad retailers...read more
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Q3. Simple SQL questions
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Q1. Advanced formulas of Excel
Ans. 
Advanced Excel formulas are complex functions used for data analysis and manipulation.
• Advanced formulas in Excel include VLOOKUP, INDEX-MATCH, SUMIFS, COUNTIFS, and IFERROR.

• These formulas are used for tasks like data lookup, conditional calculations, and summarizing data.

• For example, VLOOKUP is used to search for a value in a table and return a corresponding value from another column.
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Problem solving approach check

Q1. Case study and problem solving
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Q2. Root cause Analysis
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It just like like a screen test they will ask you questions based on your cv

It will hardly take 30minutes to complete the test.

It will take hardly 30 minutes to complete coding test.

Q1. A technical person will take your interview it will about 20 to 30minutes
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Q2. What is difference between list and tuple? They will ask to code for some questions?
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