LeetCode 512: Game Play Analysis II Solution
Master LeetCode problem 512 (Game Play Analysis II), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
512. Game Play Analysis II
Problem Explanation
Explanation:
To solve this problem, we need to write an SQL query to find the average number of sessions per user in a game. We can achieve this by grouping the data by user_id and calculating the average of the number of sessions for each user.
Algorithm:
- Use the GROUP BY clause to group the data by user_id.
- Use the AVG() function to calculate the average of the number of sessions for each user.
Time Complexity:
The time complexity of the SQL query is O(N), where N is the number of rows in the input table.
Space Complexity:
The space complexity of the SQL query is O(1) as we are not using any extra space that grows with the input size.
:
SQL:
Solution Code
// SQL query can be executed directly using JDBC or any ORM framework
// No additional Java code is needed for this problemTry It Yourself
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