Atlassian Sdet Automation Test Engineer Interview Questions and Answers

Q1. Write a java program to convert the first letter of each word in upper case
Ans. 
Java program to convert first letter of each word to upper case
• Split the input string into an array of words

• Iterate through each word and capitalize the first letter

• Join the words back together into a single string
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Q2. Write a java program to remove the duplicate characters from a string
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Java program to remove duplicate characters from a string
• Create a HashSet to store unique characters

• Iterate through the string and add each character to the HashSet

• Construct a new string by appending characters from the HashSet
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Write a code for Singleton pattern?

Frequency array, java collection, missing number

Q1. Networking related questions
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Q2. Questions related to file transfer between multiple systems
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Q1. Multithreading questions
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Q2. Related to multiple thread synchronization, lock etc
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Space and time complexities were asked for program

Q1. Managerial round
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Aptitude and coding round, one coding question and others are computer fundamentals

Q1. Return true if Subarray is present whose sum is 0
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Q2. Project, oops, dbms
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Q1. Subarray sun equal to k
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Q2. Project, oops, dbms
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Q1. Did not got slected i answered all still
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Q1. Git workflow and xpath. Reverse a string
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Q1. Sort the list of a given array of strings
Ans. 
Sort a given array of strings
• Use built-in sorting functions in programming languages

• Implement sorting algorithms like bubble sort, merge sort, etc.

• Consider case sensitivity and special characters
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Q2. Maximum number of repeating characters in a string
Ans. 
The maximum number of repeating characters in a string needs to be determined.
• Iterate through each character in the string and keep track of the count of consecutive repeating characters.

• Update the maximum count whenever a new maximum is found.

• Return the maximum count at the end of the iteration.
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Q3. Type script and java script arrow function loops if else condition
Ans. 
Explaining type script and java script arrow function loops with if else condition.
• TypeScript and JavaScript both support arrow functions for concise syntax.

• Arrow functions can be used in loops to simplify code.

• If-else conditions can be used with arrow functions to add logic.

• Example: const numbers = [1, 2, 3]; numbers.forEach(num => {if(num % 2 === 0) {console.log(num + ' is even');} else {console.log(num + ' is odd');
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Q4. Parallel browser testing, test ng, oops concept
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Q5. Scaled agile framework related questions
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Q6. Selenium and cypress difference ? How to choose best tool
Ans. 
Selenium is widely used for web automation while Cypress is a newer tool with better performance and debugging capabilities.
• Selenium supports multiple programming languages while Cypress only supports JavaScript.

• Cypress has a built-in test runner and debugger while Selenium requires third-party tools.

• Selenium is better for cross-browser testing while Cypress is better for end-to-end testing.

• Choose Selenium for larger a...read more
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Q7. Comparator and comparable difference?
Ans. 
Comparator and Comparable are interfaces used for sorting objects in Java.
• Comparator interface is used to sort objects based on custom criteria.

• Comparable interface is used to sort objects based on their natural order.

• Comparator interface has two methods: compare() and equals().

• Comparable interface has one method: compareTo().
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Q8. Fail-safe and fail-fast iterator?
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Q1. What is React Context?
Ans. 
React Context is a feature in React that allows data to be passed down the component tree without having to pass props manually.
• Context provides a way to share values like themes, user data, etc. across the component tree.

• It avoids prop drilling, where props are passed down multiple levels to reach a component that needs them.

• Context consists of two parts: a Provider component that provides the data and a Consumer comp...read more
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Q2. What is meant by closure in javascript?
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Closure is a function that has access to its parent scope, even after the parent function has closed.
• Closure is created when a function is defined inside another function.

• The inner function has access to the outer function's variables and parameters.

• The outer function returns the inner function, which can be called later with the parent scope still accessible.

• Closures are used for data privacy, event handlers, and call
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Q3. What are the complicated tasks you've done exceeding everyone's expectation?
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Q4. Algorithm to convert roman numeral to numbers?
Ans. 
Algorithm to convert roman numeral to numbers
• Create a dictionary to map roman numerals to their corresponding values

• Iterate through the roman numeral string from right to left

• If the current value is less than the previous value, subtract it from the total

• If the current value is greater than or equal to the previous value, add it to the total

• Return the total
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Q1. What is React context?
Ans. 
React context is a way to pass data through the component tree without having to pass props down manually at every level.
• Context provides a way to share values like a theme or user data across the component tree.

• It avoids prop drilling and makes the code cleaner and more maintainable.

• Context consists of two parts: a Provider component that provides the data and a Consumer component that consumes the data.

• Context can be...read more
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Q2. What is abstract class in javascript?
Ans. 
There is no abstract class in JavaScript.
• JavaScript does not have a built-in abstract class concept.

• However, it is possible to create abstract classes using functions and prototypes.

• Abstract classes are used as blueprints for other classes to inherit from.

• They cannot be instantiated on their own and must be extended by a subclass.

• Abstract methods can be defined in the abstract class and must be implemented in the subcl
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Q3. What is meant by function overloading and function overriding?
Ans. 
Function overloading is when multiple functions have the same name but different parameters. Function overriding is when a subclass provides its own implementation of a method that is already present in the parent class.
• Function overloading is used to provide multiple ways to call a function with different parameters.

• Function overriding is used to provide a specific implementation of a method in a subclass.

• Function ove...read more
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Q4. Implement counter in react app
Ans. 
Implement a counter in a React app
• Create a state variable to hold the count

• Render the count in the UI

• Add buttons to increment and decrement the count

• Update the state variable on button click
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