- 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
Subarrays with K Different Integers
Learn to count subarrays containing exactly K distinct integers using sliding window technique with detailed Java implementation.
- DSA Problems
Max Consecutive Ones III Java Solution with Sliding Window
Complete Java implementation for finding maximum consecutive ones with at most k flips, using sliding window technique with O(n) time and space complexity.
- DSA Problems
Sliding Window Maximum Problem Solution
Complete Java implementation of the sliding window maximum problem using deque data structure with O(n) time and space complexity analysis.
- 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
Minimum Window Substring Problem Solution
Complete Java implementation of the minimum window substring algorithm using sliding window technique with O(m+n) time complexity.
- 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
Three Sum Problem Solution and Algorithm Analysis
Complete Java implementation of the three sum algorithm with optimal time complexity and space considerations for FAANG interviews.
- DSA Problems
Reverse String or Reverse Vowels of a String Problem
Complete Java solution for reversing strings and vowels with optimal time and space complexity analysis.
- DSA Problems
Trapping Rain Water Algorithm Solution
Comprehensive Java implementation of the trapping rain water problem with optimal time and space complexity analysis.
- DSA Problems
Container With Most Water Algorithm Solution
Complete Java implementation of the container with most water problem using two-pointer technique with O(n) time and space complexity analysis.
- DSA Problems
Pair Sum in Sorted Array Algorithm Solution
Efficient Java implementation to find two numbers in a sorted array that sum to a target value using two-pointer technique.
FAANG Data Structures & Algorithms Problems Guide
A curated catalog of concrete data structures and algorithms problems. Use it to plan practice, track coverage, and rehearse solutions with a repeatable approach.