"1701. Average Waiting Time" is a medium-level problem and the daily challenge (POTD) for July 9, 2024, on LeetCode. The solution presented in the video is coded in Java, but the approach is explained using a dry-run on a blackboard. This method makes the video accessible and beneficial for individuals with different programming backgrounds, as it focuses on the underlying logic rather than language-specific details.
Intuition:
The problem of calculating the average waiting time can be approached quite intuitively. Imagine simulating the process of customers arriving at a restaurant, placing orders, and waiting for their food. By using a simple example, the approach becomes clear and straightforward.
The key idea is to follow the sequence of events as described in the problem. As each customer arrives, you keep track of their order and the time they spend waiting. By doing this, you can calculate the total waiting time for all customers and then find the average by dividing this total by the number of customers.
This simulation involves keeping track of the cumulative waiting time as each new order is processed. By iterating through the list of customers, you can continuously update the total waiting time based on the order times and the time it takes to serve each customer. This process ensures that you account for all necessary details and arrive at the correct average waiting time efficiently.
By breaking down the problem into these intuitive steps, you can easily understand how to implement the solution. The video effectively explains this logic through a clear dry-run, making it accessible for viewers with different programming backgrounds.
Link to the problem: leetcode.com/problems/average...
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