Optum Global Solutions Interview Questions and Answers

To reverse a string with spaces present in the same position, we can split the string by spaces, reverse each word, and then join them back together.

• Split the string by spaces to get individual words

• Reverse each word

• Join the reversed words back together with spaces in between

Generate all permutations of a string of length n within a string of length m.

• Use recursion to generate all possible permutations of the string of length n.

• Iterate through the string of length m and insert the permutations at different positions.

• Return an array of strings containing all permutations of the string of length n within the string of length m.

I run automation Regression scripts using a test automation framework and scheduling tools.

• I organize regression scripts into test suites based on functionality

• I use a test automation framework like Selenium or Appium to execute the scripts

• I schedule the regression runs using tools like Jenkins or TeamCity

• I analyze the test results and report any failures for further investigation

A bad request in API testing is when the server cannot process the request due to incorrect syntax or missing parameters.

• Bad request status code is 400

• Common causes include missing or incorrect parameters, invalid data format, or unauthorized access

• Examples: missing required parameters, incorrect data type in request body

PUT is used to update an existing resource in SQL, while POST is used to create a new resource.

• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request.

• POST is not idempotent, meaning multiple identical requests may have different effects.

• PUT is used to update specific resources identified by the request URI.

• POST is used to create new resources under the request URI.

• PUT is typically used for updating existing records in a database.

• P...read more

Use SQL query with ORDER BY and LIMIT to find the second highest salary.

• Use ORDER BY clause to sort the salaries in descending order

• Use LIMIT 1,1 to get the second row after skipping the first row

• Consider handling cases where there might be ties for the highest salary

Count occurrences of characters in a digit

• Iterate through each digit in the input array

• For each digit, convert it to a string and iterate through each character

• Use a hashmap to keep track of the count of each character