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LeetCode 845: Longest Mountain in Array – Java Solution with Peak Expansion
Learn how to identify mountain peaks, expand in both directions, and find the longest valid mountain subarray using O(n) time and O(1) extra space.
LeetCode 41: First Missing Positive – O(n) Time and O(1) Space Java Solution
A complete explanation of the cyclic placement technique for finding the smallest missing positive integer in an unsorted array.
LeetCode 55: Jump Game – Java Greedy Solution with Explanation and Dry Run
Learn how to solve LeetCode 55 Jump Game using a simple greedy approach by tracking the farthest index reachable at every step.
LeetCode 1189: Maximum Number of Balloons – Java HashMap and Frequency Counting Solution
SEO Subtitle Learn Multiple Approaches, Frequency Analysis, Dry Run, Complexity Breakdown, and Interview Insights for This Popular String Counting Problem
LeetCode 1833: Maximum Ice Cream Bars – Java Greedy & Counting Sort Solution Explained
Learn Greedy Algorithms, Counting Sort Optimization, Dry Runs, Complexity Analysis, and Interview Strategies Through This Classic Budget Allocation Problem
LeetCode 1732: Find the Highest Altitude – Java Prefix Sum Solution Explained
Master Running Sum and Prefix Sum Techniques with Step-by-Step Explanation, Dry Run, Alternative Approaches, Complexity Analysis, and Interview Insights
LeetCode 1344: Angle Between Hands of a Clock – Java Mathematical Solution Explained
Master Clock Angle Problems with Mathematics, Geometry, Formula Derivation, Dry Run Examples, Complexity Analysis, and Interview Tips in Java
LeetCode 3612: Process String with Special Operations I – Java StringBuilder Solution Explained
Learn how to solve LeetCode 3612 using StringBuilder, string simulation, reverse operations, duplication logic, dry run examples, complexity analysis, and interview insights.
LeetCode 3838: Weighted Word Mapping – Java Solution Explained with Multiple Approaches
Learn How to Convert Weighted Words into Encoded Characters Using Hashing, Modular Arithmetic, and Optimized Character Mapping