Dunnhumby Associate Interview Questions and Answers

Q1. Java hash map and how it works
Ans. 
Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap in Java implements the Map interface and allows null keys and values.

• It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Q1. Questions related to SAP BW and HANA
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Q1. Questions related to SAP BW and HANA
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Q1. Reason for Job Change
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90 min coding test with 4-5 problems to solve

Q1. Technical rounds mostly goes around the project work ans some were based on the JD.
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Round 1 Aptitude Test. They Ask Total 24 questions There are Aptitude and Verbal, One Codding question related To Sql Joins.

Basic speaking test, english

Q1. What is your analysis of the graphs?
Ans. 
The graphs show a steady increase in sales over the past year.
• Sales have been consistently rising month over month.

• There was a significant spike in sales during the holiday season.

• The overall trend is positive and indicates growth in the business.
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Q1. Org fit check questions
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