Latest Articles
Discover our latest posts and insights from the Kode$word journey
Longest Palindrome – Building the Maximum Length from Given Letters (LeetCode 409)
Using Frequency Counting to Construct the Largest Possible Palindrome
Check if All Characters Have Equal Number of Occurrences – Frequency Map Approach (LeetCode 1941)
Simple HashMap Technique to Validate Equal Character Frequencies
Longest Repeating Character Replacement – Sliding Window Explained (LeetCode 424)
Mastering the Sliding Window Pattern with Frequency Optimization
Find First and Last Position in Sorted Array – From Brute Force to Binary Search (LeetCode 34)
Optimizing from O(n) Linear Scan to O(log n) Binary Search
Mastering Binary Search – LeetCode 704 Explained
A Complete Guide with Code Walkthrough, Algorithm Explanation, and Practice Recommendations
LeetCode 187 – Repeated DNA Sequences (Java Solution with Sliding Window and HashSet)
Step-by-Step Explanation with Optimized Approach and Time Complexity Analysis
Length of Longest Subarray With At Most K Frequency – Sliding Window Approach
Learn how to find the longest contiguous subarray where each element occurs at most K times using HashMap and sliding window.
Fruit Into Baskets – Sliding Window with Two Types
Learn how to maximize the number of fruits you can collect with two baskets using a sliding window and HashMap.
Longest Subarray of 1's After Deleting One Element – Sliding Window Approach
Learn how to maximize consecutive 1's in a binary array by deleting exactly one element using an efficient sliding window technique.