Top Competitors solved

In the context of a coding challenge platform, hackers submit solutions to various challenges. Each challenge has a difficulty level and each submission has a score. The problem here is to identify hackers who have made more than one submission where the score matches the difficulty level of the challenge.

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Here is the Top Competitors solved HackerRank solution using CodeRankGPT:

The solution approach involves joining four tables: submissions, challenges, difficulty, and hackers. The join conditions ensure that only those records where the submission's score matches the challenge's difficulty level are considered. The result is then grouped by hacker ID and name, and filtered to include only those hackers who have more than one such submission. The final result is ordered by the number of such submissions in descending order, and by hacker ID in ascending order.


SELECT H.hacker_id, 
       H.name 
FROM   submissions S 
       JOIN challenges C 
         ON S.challenge_id = C.challenge_id 
       JOIN difficulty D 
         ON C.difficulty_level = D.difficulty_level 
       JOIN hackers H 
         ON S.hacker_id = H.hacker_id 
            AND S.score = D.score 
GROUP  BY H.hacker_id, 
          H.name 
HAVING Count(S.hacker_id) > 1 
ORDER  BY Count(S.hacker_id) DESC, 
          S.hacker_id ASC;

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