ZS Technologies Software Engineering Lead Interview Questions and Answers

Mathematical, Analytical and Logical questions asked in aptitude test.

Case study on database modelling to test the concepts of normalisation.

Q1. Fundamentals of programming
Ans. 
Fundamentals of programming are the basic concepts and principles that form the foundation of coding.
• Includes data types, variables, control structures, functions, and algorithms

• Understanding of programming paradigms such as object-oriented, functional, and procedural

• Knowledge of programming languages and their syntax

• Ability to write clean, efficient, and maintainable code

• Debugging and problem-solving skills

• Examples: l...read more
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Q2. Collections and its usage
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Collections are data structures used to store and manipulate groups of related objects.
• Collections provide a way to organize and manage data efficiently.

• Common types of collections include lists, sets, and maps.

• Collections can be used to perform operations such as sorting, filtering, and searching.

• Examples of collections in Java include ArrayList, HashSet, and HashMap.
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Q3. Problem solving and optimising the code
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Q4. Time complexity and space complexity of a code
Ans. 
Time and space complexity are measures of performance of a code.
• Time complexity measures how long a code takes to run as input size increases.

• Space complexity measures how much memory a code uses as input size increases.

• Both are usually expressed in Big O notation.

• Optimizing for one may lead to worse performance in the other.
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Q5. Complex SQL queries to solve business problems
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