TCS QA QC Engineer Interview Questions and Answers

To reverse a string, iterate through the string from end to start and append each character to a new string.

• Iterate through the string from end to start

• Append each character to a new string

• Return the reversed string

Use a hash set to find duplicates in a string array.

• Create a hash set to store unique elements.

• Iterate through the array and check if the element is already in the hash set.

• If it is, then it is a duplicate.

• Example: ['apple', 'banana', 'apple'] -> 'apple' is a duplicate.

To check if an integer is a palindrome, reverse the integer and compare it with the original integer.

• Convert the integer to a string to easily reverse it

• Reverse the string and compare it with the original string

• If they are the same, the integer is a palindrome

POM directory is a folder in a Maven project that contains Page Object Model classes for organizing and managing web elements and actions.

• POM directory helps in separating the page objects from test scripts for better organization and maintenance.

• It contains classes representing web pages with locators and methods to interact with those elements.

• Example: src/main/java/com/example/pages

Oops concept in Java refers to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the imp...read more

Different types of waits in Selenium include implicit, explicit, and fluent waits.

• Implicit wait: Waits for a specified amount of time before throwing a NoSuchElementException.

• Explicit wait: Waits for a certain condition to occur before proceeding further in the code.

• Fluent wait: Waits for a condition to be true with a specified frequency of checking.

• Example: WebDriverWait wait = new WebDriverWait(driver, 10);

Automation folder structure should be organized and easy to navigate for efficient test automation.

• Separate folders for test scripts, test data, test results, and configuration files

• Subfolders for different test suites or modules

• Naming conventions for files and folders to easily identify test cases

• Utilize version control systems like Git for managing code changes

• Include a README file with instructions on how to run tes...read more

To find all links, inspect the webpage and look for anchor tags with href attribute.

• Open the webpage in a browser

• Right-click and select 'Inspect' or press F12

• In the Elements tab, look for anchor tags ()

• Check if they have an href attribute

• Copy the link address and paste it in a new tab to verify

• Use automated tools like link checkers to find broken links