Coforge Technical Analyst Interview Questions, Process, and Tips

Python class lifestyle methods are special methods that are automatically called at different points in the life cycle of a class object.

• Constructor method (__init__): Called when a new instance of the class is created.

• Destructor method (__del__): Called when an instance of the class is about to be destroyed.

• String representation method (__str__): Called when the object needs to be represented as a string.

• Getter and se...read more

Higher order functions in JavaScript are functions that can take other functions as arguments or return functions as output.

• Higher order functions can be used to create more flexible and reusable code.

• Examples include functions like map, filter, and reduce in JavaScript.

• They allow for functions to be passed as parameters, making code more concise and readable.

Create a component to fetch and display data from an API

• Use a library like Axios or Fetch to make API requests

• Parse the JSON data received from the API

• Display the data in a user-friendly format on the front end

splice is used to add/remove elements from an array, while slice is used to create a new array from a portion of an existing array.

• splice modifies the original array, while slice does not

• splice can add elements to an array at a specific index

• slice can extract a portion of an array without modifying the original array

• splice returns the removed elements, while slice returns the extracted elements

Flatten array of objects to map with minimum price for each model

• Iterate through the array and create a map with model as key and minimum price as value

• If model already exists in map, update the value with minimum price

• Return the map as the output

To find the 10th highest salary for a given employee class.

• Sort the salaries in descending order for the specific employee class.

• Skip duplicates and find the 10th unique salary.

• Return the 10th salary as the 10th Max. Salary.

Find 4 non-repeating characters in the given string.

• Create a hashmap to store character frequencies

• Iterate through the string and count the occurrences of each character

• Return the first 4 characters with frequency 1 as non-repeating characters

Use SQL query with OFFSET and LIMIT to find 10 max salaries from employee table in PostgreSQL.

• Use ORDER BY clause to sort salaries in descending order

• Use LIMIT 10 to get only the top 10 salaries

• Use OFFSET 0 to start from the beginning of the sorted list

Use a thread pool executor to execute 3 methods in parallel and wait for all 3 to complete.

• Create a thread pool executor with a fixed number of threads.

• Submit the 3 methods as tasks to the executor using the `submit()` method.

• Use the `invokeAll()` method to wait for all tasks to complete.

• Handle any exceptions thrown by the tasks.

• Example: ThreadPoolExecutor executor = new ThreadPoolExecutor(3, 3, 0L, TimeUnit.MILLISECON...read more

The @async annotation is used to make an API asynchronous.

• Add the @async annotation to the method declaration

• Use CompletableFuture or a similar mechanism to handle the asynchronous execution

• Ensure the API returns a CompletableFuture or a similar asynchronous result

Lazy loading of beans in Spring Boot allows beans to be loaded only when they are needed, improving performance.

• Lazy loading can be achieved by using @Lazy annotation on bean definitions

• Lazy loading can also be configured in application.properties using spring.main.lazy-initialization=true

• Lazy loading is useful for optimizing application startup time and memory usage