CodeArray Technologies Interview Questions and Answers

Basic coding aptitude questions with 2 puzzles needed to be solved using code (written test so as long as you're able to vaguely achieve the said task it's fine)

Q1. Explain the basic principles in OOPS Concept.
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Q2. SOLID principles, their full form and the meaning of each of them and their significance in the code
Ans. 
SOLID principles are a set of five design principles in object-oriented programming to make software more maintainable, flexible, and scalable.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects ...read more
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Q1. Reverse a number
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Reversing a number involves changing its digits' order, e.g., 123 becomes 321.
• Convert the number to a string to manipulate its digits.

• Use string slicing to reverse the string representation.

• Convert the reversed string back to an integer.

• Example: For input 456, output will be 654.
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Q2. Find a element in a array
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To find an element in an array, we can use linear search or binary search based on the array's sorted status.
• Linear Search: Iterate through each element until the target is found. Example: Searching 'apple' in ['banana', 'apple', 'orange'].

• Binary Search: Requires a sorted array. Check the middle element, then narrow down the search. Example: Searching 'cat' in ['ant', 'bat', 'cat', 'dog'].

• Time Complexity: Linear search...read more
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Q1. QA Scripts running
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QA Scripts running refers to the process of executing automated test scripts to validate software functionality.
• QA scripts are automated test scripts written to validate software functionality.

• They are executed to ensure that the software meets the specified requirements.

• QA scripts can be written using tools like Selenium, JUnit, or TestNG.

• The results of QA script execution help identify bugs and issues in the software...read more
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General Aptitude test

Basic coding and DSA concept