TSYS|Total System Services Senior Sdet Engineer Interview Questions and Answers

Q1. Reverse a String with Java Method
Ans. 
Use StringBuilder class to reverse a string in Java.
• Create a StringBuilder object with the input string.

• Use the reverse() method of StringBuilder to reverse the string.

• Convert the reversed StringBuilder object back to a string using toString() method.
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Coding questions mostly related to Java and Api

Algorithm specific questions to understand approach

DSA, Leetcode medium -2 problems

Q1. Easy Leetcode Problem: Count of substrings with no repeating characters
Ans. 
Count substrings with unique characters in a given string
• Use a sliding window approach to keep track of unique characters in a substring

• Use a set to store characters in the current window and update the window accordingly

• Increment the count of valid substrings whenever a new character is added to the set
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Q2. Debugging a Java Code
Ans. 
Debugging a Java code involves identifying and fixing errors in the code to ensure it runs correctly.
• Start by understanding the error message or symptoms of the issue.

• Use debugging tools like breakpoints, watches, and logging to track the flow of the code.

• Review the code logic and check for common mistakes like typos, incorrect variable assignments, or logic errors.

• Test different scenarios to reproduce the issue and na...read more
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Q1. Design Parking System
Ans. 
Design a parking system with different types of parking spots
• Create classes for different types of parking spots (e.g. compact, regular, handicap)

• Implement methods for checking availability, reserving, and releasing spots

• Consider implementing a parking lot class to manage all parking spots
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Coding and mcqs

Q1. Technical round about QA process
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Q1. Java core advance questions
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Q2. Testing concepts related questions
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Hackerrank and array and leetcode medium questions and nothing else

Q1. Whats you name and hobbies
Ans. 
My name is Sarah and my hobbies include hiking, reading, and painting.
• Name: Sarah

• Hobbies: hiking, reading, painting
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Q2. Age and your hobbies
Ans. 
I am 32 years old and my hobbies include hiking, reading, and playing the guitar.
• Age: 32

• Hobbies: hiking, reading, playing the guitar
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2 dsa questions were asked

Q1. Behavioural question
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Q2. What's your salary expectation
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Dynamic programming and trees topics are asked mostly

Q1. It was 24 hrs long hackathon where we need to develop web projects based on problem statement.
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Q2. There is an option of our choice on which technology we can develop
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