Medium

LeetCode 3639: Minimum Time to Activate String

LeetCode 3638: Maximum Balanced Shipments

LeetCode 1658: Minimum Operations to Reduce X to Zero

LeetCode 1456: Maximum Number of Vowels in a Substring of Given Length

LeetCode 1052: Grumpy Bookstore Owner

LeetCode 1004: Max Consecutive Ones III

LeetCode 713: Subarray Product Less Than K

LeetCode 567: Permutation in String

LeetCode 438: Find All Anagrams in a String

LeetCode 3: Longest Substring Without Repeating Characters

LeetCode 2090: K Radius Subarray Averages

LeetCode 1343: Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold