Mastering Algorithms: HashMaps, Two Pointers, and Beyond in Java

Dive into the key algorithms involving HashMaps, HashSets, and two-pointer techniques. This course will enhance your skills in optimizing data structures and problem-solving methods.

Lessons and practices

Lesson 1: Complexity Analysis and Optimization in Java

Summing Points Between Two Towns in Integerland

Finding the Smallest Absolute Difference in an Integer List

Optimized Array Replacement

Lesson 2: Complexity Analysis and Optimization Using HashSet in Java

Common Characters Extraction Task

Efficient Celestial Body Search Using HashSet in Java

Movie Recommendation System Based on Viewing History

Lesson 3: Using HashMap for Optimal List Manipulation and Analysis in Java

Partitioning Characters into Substrings

Maximizing Unique Words by Removing a Character

Shortest Distance Between Word Occurrences

Lesson 4: Two-Pointer Technique for Pair Sum in Java

Chocolates Sweetness Pairing Task

Finding the Maximum Sum of k-Length Subarray Using Two Pointers

Longest Subarray with Given Sum

Lesson 5: Complex Array Manipulation and Two-Pointer Technique in Java

Closest Half Numbers in Arrays

Finding the Most Influential Person in a Social Network

Longest Substring with K Distinct Characters

Interested in this course? Learn and practice with Cosmo!

Practice is how you turn knowledge into actual skills.