Carelon Global Solutions QA Engineer Automation QA.Selenium Interview Questions and Answers

Q1. Reverse String without Java In built Function
Ans. 
Reverse a string without using Java built-in functions
• Create a character array from the input string

• Use two pointers to swap characters at the beginning and end of the array until they meet

• Convert the character array back to a string
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Q2. Difference Between Relative Xpath & Absolute Xpath
Ans. 
Relative Xpath is based on the current node while Absolute Xpath starts from the root node of the XML document.
• Relative Xpath does not start with a forward slash (/) while Absolute Xpath starts with a forward slash (/).

• Relative Xpath is more flexible and less prone to changes in the structure of the XML document.

• Absolute Xpath is more specific and provides the full path to the element in the XML document.

• Relative Xpath...read more
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Q1. Reverse the characters of words in the string
Ans. 
Reverse the characters of words in a string
• Split the string into an array of words

• Reverse each word in the array

• Join the reversed words back into a single string
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Q1. What kind of projects have you worked on
Ans. 
I have worked on projects involving automation testing of web applications using Selenium and API testing using Postman.
• Automation testing of web applications

• API testing using Postman

• Experience with Selenium

• Integration testing

• Regression testing
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Given input string- This is opentext.
OP- sihT si txtetnepo.

Q1. What is page object model.
Ans. 
Page Object Model is a design pattern used in test automation to create an object repository for web elements on a page.
• It helps in separating the test scripts from the web elements, making the code more maintainable and reusable.

• Each web page is represented as a class, and the web elements on the page are defined as variables within the class.

• Methods are created within the class to perform actions on the web elements,...read more
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6 questions asked in an interview

Q1. Slider window problem
Ans. 
The slider window problem involves finding the maximum sum of a subarray of a fixed size k within an array of integers.
• Use a sliding window approach to efficiently find the maximum sum subarray.

• Keep track of the current sum within the window and update it as you slide the window.

• Maintain a variable to store the maximum sum found so far.

• Example: Given array [1, 3, -1, -3, 5, 3, 6, 7] and window size k=3, the maximum sum
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Q2. Stock buy sell problem
Ans. 
The stock buy sell problem involves finding the maximum profit that can be made by buying and selling a stock at the right times.
• Calculate the difference between each pair of consecutive prices in the array

• Find the maximum subarray sum of the differences using Kadane's algorithm

• The maximum subarray sum is the maximum profit that can be made
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Q1. About my experience
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Q2. About my project and automation work
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Q1. About my notice period
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Q2. About my expected ctc
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General aptitude and out put realted questions

Face to face dsa and string manipulations

2 array question 1 on sorting other one is for searching

Q1. Technical questions related to autosar
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Q1. Question related to your projects and autosar.
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