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Easy

LeetCode 20: Valid Parentheses
·2 mins
LeetCode Daily Easy Stack String Parentheses Validation Algorithm Data-Structure
Solving the Valid Parentheses problem using stack-based approach
LeetCode 496: Next Greater Element I (Monotonic Stack)
·2 mins
LeetCode Daily Easy Array Stack Monotonic-Stack Hash Map Next Greater Element
Monotonic decreasing stack over nums2 to build next-greater map; answer queries for nums1.
LeetCode 1071: Greatest Common Divisor of Strings
·2 mins
LeetCode Daily Easy String Math Gcd
LeetCode Problem Solving
LeetCode 643: Maximum Average Subarray I
·1 min
LeetCode Daily Easy Sliding Window
LeetCode Problem Solving
LeetCode 1550: Three Consecutive Odds
·1 min
LeetCode Array Easy
LeetCode Problem Solving
LeetCode 1399: Count Largest Group
·1 min
LeetCode Daily Easy Hash Map
LeetCode Problem Solving
LeetCode 2325: Decode the Message
·1 min
LeetCode Hash Map Easy
LeetCode Problem Solving
LeetCode 724: Find Pivot Index
·2 mins
LeetCode Daily Easy Prefix Sum
LeetCode Problem Solving
LeetCode 303: Range Sum Query - Immutable
·1 min
LeetCode Easy Prefix Sum
LeetCode Problem Solving
LeetCode 1534: Count Good Triplets
·3 mins
LeetCode Daily Easy Prefix Sum
LeetCode Problem Solving