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Medium

LeetCode 209: Minimum Size Subarray Sum (Sliding Window)
·1 min
LeetCode Daily Medium Array Sliding-Window Two-Pointers Prefix-Sum Binary-Search
Sliding window with two pointers; minimize subarray length where sum ≥ target.
LeetCode 1695: Maximum Erasure Value (Sliding Window)
·1 min
LeetCode Daily Medium Array Sliding-Window Two-Pointers Hash-Set
Sliding window with a set and running sum; two pointers to keep the subarray unique.
LeetCode 1497: Check If Array Pairs Are Divisible by k (Remainder Pairing, Modulo)
·2 mins
LeetCode Daily Medium Array Hash-Map Complement Counting Math Modulo
Remainder pairing with a hash map; handle 0 and k/2 remainders carefully.
LeetCode 904: Fruit Into Baskets
·3 mins
LeetCode Daily Medium Sliding-Window Variable-Window Two-Pointers Hash-Map
LeetCode Problem Solving - Variable Size Sliding Window with Hash Map
LeetCode 1658: Minimum Operations to Reduce X to Zero
·3 mins
LeetCode Daily Medium Array Sliding-Window Prefix-Sum Reverse-Thinking
LeetCode Problem Solving - Reverse Thinking with Sliding Window
LeetCode 1456: Maximum Number of Vowels in a Substring of Given Length
·2 mins
LeetCode Daily Medium String Sliding-Window Fixed-Window Vowel-Counting
LeetCode Problem Solving - Fixed Size Sliding Window with Vowel Counting
LeetCode 1052: Grumpy Bookstore Owner
·3 mins
LeetCode Daily Medium Array Sliding-Window Fixed-Window Optimization
LeetCode Problem Solving - Fixed Window with Customer Satisfaction Optimization
LeetCode 1004: Max Consecutive Ones III
·3 mins
LeetCode Daily Medium Array Sliding-Window Two-Pointers Binary-Array
LeetCode Problem Solving - Variable Size Sliding Window with Zero Counting
LeetCode 713: Subarray Product Less Than K
·3 mins
LeetCode Daily Medium Sliding-Window
LeetCode Problem Solving
LeetCode 567: Permutation in String
·4 mins
LeetCode Daily Medium String Sliding-Window Hash-Map Frequency-Counting Permutation
LeetCode Problem Solving - Sliding Window with Character Frequency
LeetCode 438: Find All Anagrams in a String
·4 mins
LeetCode Daily Medium String Sliding-Window Hash-Map Anagram Frequency-Counting
LeetCode Problem Solving - Sliding Window with Character Frequency
LeetCode 3: Longest Substring Without Repeating Characters
·2 mins
LeetCode Daily Medium Sliding-Window Hash-Map
LeetCode Problem Solving