Count of Interesting Subarrays| Prefix-sum techniques and modular arithmetic

https://leetcode.com/problems/count-o... Boost your problem-solving skills with this in-depth explanation of LeetCode: Count of Interesting Subarrays. In this video, Shivam Parihar explains how to efficiently count subarrays that meet a special condition using smart modular arithmetic and prefix-sum techniques. You’ll learn a clean and optimized approach using: ✅ Indicator transformation to mark valid elements ✅ Prefix sum tracking for cumulative counts ✅ Hash map frequency technique for fast lookups ✅ Modular arithmetic to validate subarray conditions ✅ Optimized strategy to avoid brute-force solutions This tutorial builds strong intuition for prefix-sum patterns, modulo logic, and frequency counting—essential tools for coding interviews, competitive programming, and LeetCode practice. 🔗 CONNECT WITH SHIVAM PARIHAR LinkedIn: / shivamp07 Codeforces: https://codeforces.com/profile/shivamp07 🏆 CODEHURDLE TEAM Website: https://codehurdle.com Instagram: / codehurdle.official LinkedIn (Company):   / dashboard   #LeetCode #InterestingSubarrays #PrefixSum #Modulo #HashMap #DSA #CompetitiveProgramming #LeetCodeSolution #CodeHurdle #ShivamParihar