- DSA Patterns
3Sum Problem Solution - Efficient Algorithm for Finding Triplets
Complete Java solution for the classic 3Sum algorithm with two-pointer technique, including time complexity analysis and edge case handling.
- DSA Patterns
Fast Slow Pointer Algorithm Patterns in Java
Comprehensive guide to fast/slow pointer techniques for linked list cycle detection, middle element finding, and related algorithmic problems with Java implementations.
- DSA Problems
Trapping Rain Water Algorithm Solution
Comprehensive Java implementation of the trapping rain water problem with optimal time and space complexity analysis.
- DSA Patterns
Pair Sum in Sorted Arrays Algorithm
Complete Java solution for finding pairs that sum to a target value in sorted arrays using two-pointer technique with O(n) time complexity.
- DSA Problems
Four Sum Problem Solution with Two Pointers Approach
Complete Java implementation of 4Sum problem using sorting and two-pointer technique with O(n³) time complexity and O(1) space solution.
- DSA Patterns
Longest Substring Without Repeating Characters
Comprehensive Java solution for finding the longest substring without repeating characters using sliding window technique with detailed complexity analysis and edge case handling.
- DSA Patterns
Reverse String and Palindrome Check Algorithms
Comprehensive Java solutions for string reversal and palindrome validation with multiple approaches and performance analysis.
- DSA Patterns
Minimum Window Substring Problem Solution
Complete Java implementation of the sliding window technique for finding the minimum window substring containing all characters from a target string.
- DSA Problems
Longest Palindromic Substring Algorithm Solution
Complete Java implementation with optimal time and space complexity for finding the longest palindromic substring using expand around centers approach.
- DSA Patterns
Merge Sorted Arrays Algorithm Solution
Complete Java implementation of merge sorted arrays with optimal time and space complexity analysis for FAANG technical interviews.
- DSA Problems
Longest Substring Without Repeating Characters Algorithm
Efficient Java solution for finding the longest substring with all unique characters using sliding window technique.
- DSA Problems
Valid Palindrome Problem Solution
Complete Java implementation for validating palindromes with detailed complexity analysis and edge case handling.
#Two Pointers
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