- DSA Problems
Longest Repeating Character Replacement Algorithm
Learn to find the maximum length of a substring that can be made with at most k replacements to make all characters the same.
- DSA Problems
Find All Anagrams in a String Algorithm Solution
Complete Java implementation for finding all anagrams of a pattern string within a target string using sliding window technique.
- DSA Problems
Permutation in String Algorithm Solution
Complete Java implementation for checking if one string contains a permutation of another string using sliding window technique.
- DSA Problems
First Unique Character in a String Algorithm
Find the first non-repeating character in a string and return its index, with optimal time and space complexity solutions.
- 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 Problems
Isomorphic Strings Java Solution with HashMap
Complete Java implementation for determining if two strings are isomorphic, using character mapping with HashMap for optimal time and space complexity.
- DSA Patterns
Group Anagrams Problem Solution | LeetCode 49
Complete Java solution for grouping anagrams with optimal time and space complexity analysis for FAANG interviews.
- DSA Problems
Decode String Algorithm Solution
Java implementation of decode string problem with stack-based approach for handling nested encoded patterns.
- DSA Patterns
Valid Anagram Solution Patterns and Implementation
Complete Java implementation guide for valid anagram problems covering sorting, counting, and hash map approaches with time/space complexity analysis.
- DSA Problems
Compare Version Numbers Java Solution
Complete Java implementation to compare version numbers with proper edge case handling and performance considerations.
- DSA Problems
String to Integer Conversion Algorithm
Implementation of atoi function converting strings to 32-bit signed integers with overflow handling and edge case management.
- DSA Problems
Group Anagrams Problem Solution
Complete Java implementation for grouping anagrams from a string array, including optimal approach and time/space complexity analysis.
#String Manipulation
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