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Java-based LeetCode algorithm problem solutions, regularly updated
1052\. Grumpy Bookstore Owner
Medium
There is a bookstore owner that has a store open for `n` minutes. Every minute, some number of customers enter the store. You are given an integer array `customers` of length `n` where `customers[i]` is the number of the customer that enters the store at the start of the ith
minute and all those customers leave after the end of that minute.
On some minutes, the bookstore owner is grumpy. You are given a binary array grumpy where `grumpy[i]` is `1` if the bookstore owner is grumpy during the ith
minute, and is `0` otherwise.
When the bookstore owner is grumpy, the customers of that minute are not satisfied, otherwise, they are satisfied.
The bookstore owner knows a secret technique to keep themselves not grumpy for `minutes` consecutive minutes, but can only use it once.
Return _the maximum number of customers that can be satisfied throughout the day_.
**Example 1:**
**Input:** customers = [1,0,1,2,1,1,7,5], grumpy = [0,1,0,1,0,1,0,1], minutes = 3
**Output:** 16
**Explanation:** The bookstore owner keeps themselves not grumpy for the last 3 minutes.
The maximum number of customers that can be satisfied = 1 + 1 + 1 + 1 + 7 + 5 = 16.
**Example 2:**
**Input:** customers = [1], grumpy = [0], minutes = 1
**Output:** 1
**Constraints:**
* `n == customers.length == grumpy.length`
* 1 <= minutes <= n <= 2 * 104
* `0 <= customers[i] <= 1000`
* `grumpy[i]` is either `0` or `1`.