Xogene Junior Software Developer Interview Questions and Answers

Coding Test on Mettl Software, General English questions,Questions based on computer fundamentals.

Q1. Encapsulation with real life examples
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Example: A car object encapsulates its properties like speed, fuel level, and methods like start, stop, accelerate.

• Examp...read more
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Q2. List and its methods/functions
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List is a data structure in Python that stores a collection of items in a specific order.
• Common methods/functions for lists in Python include append(), remove(), sort(), and index().

• Lists can contain different data types, such as strings, integers, and even other lists.

• Lists are mutable, meaning you can change the elements within a list after it has been created.
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Q3. Explain break, pass, continue
Ans. 
break, pass, and continue are control flow statements used in programming to alter the flow of execution.
• break: used to exit a loop or switch statement

• pass: not a keyword in most programming languages, but can be used as a placeholder for future code

• continue: used to skip the rest of the current iteration in a loop and start the next iteration
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Q4. Coding round - palindrome number
Ans. 
Check if a number is a palindrome or not
• Convert the number to a string

• Reverse the string and compare with the original string

• If they are the same, the number is a palindrome
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Q5. Remove duplicates from array
Ans. 
Remove duplicates from array of strings
• Create a Set to store unique strings

• Iterate through the array and add each string to the Set

• Convert the Set back to an array to get the unique strings
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Q6. Python Data structures(difference between list and tuple)
Ans. 
Lists are mutable, ordered collections of items, while tuples are immutable, ordered collections of items.
• Lists are denoted by square brackets [], while tuples are denoted by parentheses ().

• Lists can be modified after creation, while tuples cannot be modified.

• Lists are typically used for collections of similar items that may need to be changed, while tuples are used for fixed collections of items.

• Example: list_example ...read more
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