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.
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.
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.
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.
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.