Resources  
  • Max Sum Subarray of Size KApr 27, 2026. Master the sliding window technique to find the maximum sum subarray of size K. This guide provides a clear explanation, Java code, and complexity analysis.
  • Maximum Subarray Sum Using Kadane’s Algorithm (DSA Explained with Example)Jan 07, 2026. Learn how to solve the Maximum Subarray Sum problem using Kadane’s Algorithm. This beginner-friendly DSA article explains the concept step by step with examples, code, and time complexity.
  • Find Subarray From Array in C# 4.5Mar 01, 2013. In this article I explain how to select a subarray from an array in C# 4.5.
  • Count Subarrays with K Odd NumbersApr 27, 2026. Master the 'Count Subarrays with K Odd Numbers' problem using the sliding window and 'atMost(k) - atMost(k-1)' technique. Optimize your coding interview prep with this O(n) solution!
  • Subarrays With At Most K Distinct IntegersApr 27, 2026. A detailed guide to solving the Subarrays With At Most K Distinct Integers problem using the sliding window technique. Learn the intuition, step-by-step approach, dry run examples, and optimized Java implementation with O(n) time complexity. Perfect for coding interviews and mastering array-based problems.
  • Split Array into Two Equal Sum SubarraysApr 23, 2026. Learn how to efficiently determine if an array can be split into two contiguous subarrays with equal sums using the prefix sum technique. Optimal O(n) solution!
  • Count Increasing SubarraysApr 22, 2026. Learn how to efficiently count strictly increasing subarrays in an array using an optimized O(n) approach. This article explains the concept step-by-step by breaking the array into increasing segments and applying a mathematical formula to count valid subarrays. Includes a clear Java implementation, dry run examples, and edge case analysis—perfect for beginners and coding interview preparation.
  • Flip to Maximize 1s in an ArrayApr 21, 2026. Learn how to solve the Flip to Maximize 1s problem in Java. This article explains step-by-step how to find the maximum number of 1s in a binary array after flipping at most one subarray, including code explanation, execution, and examples.
  • Learn Sliding Window TechniqueSep 19, 2024. The Sliding Window Technique is an efficient method for solving problems involving subarrays or substrings. It uses a "window" that slides across the data structure, allowing for dynamic adjustments in size.