PTC Software Specialist Interview Questions and Answers

Q1. SOLID Principles
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Karet Interview :
5 back to back System design question, we don't need to explain each component but more like list as many as points. Need to finish all the question in 15min

1-2 problem solving question : It's not fency algorithm round with tough question. But true problem solving round using basic knowledge such as hashmap, heap

Q1. Design File System : You have given file size and collection in input 1 : get total size 2 : find top k collections in size
Ans. 
Design a file system to calculate total size and find top k collections in size.
• Create a file system class with methods to add files and calculate total size.

• Maintain a data structure to store the collections and their sizes.

• Implement a method to find the top k collections based on size.

• Consider using a priority queue or sorting the collections based on size.

• Handle edge cases like empty collections or invalid input siz
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Q2. Find total size
Ans. 
Calculate the total size of an array of strings.
• Iterate through the array and sum the length of each string.

• Use the `length` property of each string to get its size.

• Handle edge cases such as empty strings or null values.
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Q3. Find Top k collections
Ans. 
The question is asking to find the top k collections.
• Use a sorting algorithm to sort the collections in descending order based on a specific criteria.

• Select the top k collections from the sorted list.

• Return the selected collections as an array of strings.
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Q1. Javascript question Diff b/w function declaration and expression, types of scope, Call,bind and apply,
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Q1. Lexical Scope and questions based on scope
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2 Coding questions, 1 SQL and a few MCQs.

Q1. Given a String find the lexicographically lowest substring containing k number of 1s
Ans. 
Find the lexicographically lowest substring with k 1s in a given string.
• Iterate through the string and maintain a sliding window of size k.

• Keep track of the count of 1s in the window and update the result if a valid substring is found.

• Return the lexicographically lowest substring with k 1s.
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Q2. Given to solve SQL Questions based on Join and group by.
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Q1. Technical Discussion
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Q2. Questions based on operating Systema and OOPs
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Q3. Difference between Abstract class and interface
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

• A class can only extend one abstract class, but can implement multiple interfaces.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for cl...read more
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Q4. Process Synchronisation
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Q5. Was asked what project would I take up if I get funded and list the challenges of taking up the project.
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Q1. Just Basic HR Questions
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Discussion about in details technical aspects of project

Q1. After five years how we looks our self in this company.
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Q2. How we associated our work experiences to company job profile.
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Aptitude+ coding questions

Q1. Online face to face coding tets
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Q1. Didn't attend the round
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First round is a hectic 3 hr aptitude + java snippets test, hirepro based.

Q1. Not Applicable for me
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