ParallelDots Data Executive Interview Questions and Answers

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. Tell about yourself
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Q1. Tell about yourself
Ans. 
Experienced manager with a proven track record of leading successful teams and achieving business goals.
• Over 10 years of management experience in various industries

• Strong leadership skills and ability to motivate and inspire team members

• Track record of meeting and exceeding targets and KPIs

• Excellent communication and interpersonal skills

• Passionate about driving innovation and continuous improvement

• Previously managed a
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Core HTML, CSS and JS

JS deep dive and react

Q1. Mimic Promise.all, Array.flat, OTP Component etc
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Q1. Languages known
Ans. 
I am fluent in English, Spanish, and French.
• English

• Spanish

• French
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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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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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Contracts review and abstraction

Q1. Contracts and essential elements
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