BPAAS Solutions Software Engineer Interview Questions and Answers

Count the occurrences of each character in a given string using a dictionary or similar data structure.

• Use a dictionary to store character counts. Example: 'hello' -> {'h': 1, 'e': 1, 'l': 2, 'o': 1}

• Iterate through each character in the string and update the count in the dictionary.

• Consider using collections.Counter for a more concise solution. Example: Counter('hello') gives the same result.

• Handle edge cases like e...read more

I ensure data integrity through systematic validation techniques, including input checks, error handling, and user feedback.

• Use input validation techniques like regex for formats (e.g., email validation).

• Implement server-side validation to prevent malicious data submissions.

• Provide user-friendly error messages to guide users in correcting their input.

• Utilize libraries or frameworks that offer built-in validation featur...read more

Java 8 introduced significant features like lambdas, streams, and the new Date/Time API, enhancing productivity and code readability.

• Lambda Expressions: Enable concise representation of functional interfaces. Example: (a, b) -> a + b.

• Streams API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).

• Default Methods: Allow interfaces to h...read more