Below is the list of recent solutions.

The candidate's solution is complete and solves the problem. The candidate's approach is to use a regular expression to validate the email. The regular expression is a pattern that is used to match the email. The regular expression is tested against the email to see if it matches. If it matches, the email is valid.

Nov 17

The solution above is optimal because it uses a subquery to find the most recent order date for each customer.

Nov 15

The candidate's solution is correct and uses the built-in function reversed(). The time and space complexity of the solution is O(n).

Nov 11

The candidate's solution is correct and demonstrates a good understanding of SQL. The solution is also optimal, as it is simple and easy to understand.

Nov 10

The candidate's solution is correct and demonstrates a level of completeness. The candidate has correctly identified that a subquery is needed to get the ThreadIDs that are in the topic, and then counts the number of replies that are in those threads.

Nov 08

The candidate's solution is complete and solves the problem. The candidate has correctly identified that a feature selection algorithm is needed to identify the most predictive features. This is a good approach to the problem.

Oct 28

The candidate's solution is correct and demonstrates a level of completeness. The candidate's approach is clear and understandable.

Oct 27

The candidate's solution is complete and solves the problem. The candidate has used a cursor to loop through the table and print the employee's name and salary. This is the optimal solution.

Oct 23