Opus Technologies System Engineer Interview Questions and Answers

It was quiet normal, 2 question + 5-6 mcq.

Q1. Array sorting-based problem.
Ans. 
Sorting an array of strings based on a specific criteria.
• Use a sorting algorithm like quicksort or mergesort to sort the array of strings.

• Define a custom comparator function to specify the sorting criteria, such as length or alphabetical order.

• Example: Sorting an array of strings based on length - ['apple', 'banana', 'pear'] becomes ['pear', 'apple', 'banana'].
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Q2. String pattern matching based problem
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Q3. OOP concepts based question
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Q4. Multithreading based problem
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Q5. Deep dive in OOP concepts
Ans. 
OOP concepts include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability for objects to be treated as instances of their parent class or their own class.

• Abstraction: Hiding the implementation details and showing only th
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