Problem

Design and implement a simple rate limiter for an API endpoint. The rate limiter should allow a maximum of n requests per time_window seconds for a given user. If a user exceeds this limit, subsequent requests should be denied until the next time window.

Input

• n: Integer representing the maximum number of requests allowed.
• time_window: Integer representing the time window in seconds.
• user_id: String representing the unique identifier for the user.

Output

• Return True if the request is allowed, otherwise return False.

Examples

Example 1:

Input: n = 5, time_window = 10, user_id = 'user1'
Output: True (1st request allowed)

Example 2:

Input: n = 5, time_window = 10, user_id = 'user1' (after 5 requests)
Output: False (6th request denied)

Constraints

• 1 <= n <= 100
• 1 <= time_window <= 60
• 1 <= user_id.length <= 100
• The function can be called multiple times in quick succession.