Count Frequency Staircase Subarrays II | Doubly Linked List Approach + Dry Run | LeetCode 525

In this video, we solve Count Frequency Staircase Subarrays II from LeetCode Weekly Contest 525 (Problem 2) using a Doubly Linked List approach. SOLUTION CODE: https://leetcode.com/problems/count-f... This is a detailed walkthrough covering the intuition, algorithm, complete code, and step-by-step dry run to help you understand how the solution works. 📌 Problem Link: https://leetcode.com/problems/count-f... What you'll learn: Understanding the problem and key observations Doubly linked list approach Step-by-step algorithm explanation Complete code implementation Detailed dry run with an example Time and space complexity analysis If you're preparing for LeetCode contests or improving your problem-solving skills, this walkthrough will help you understand the approach in depth. #LeetCode #CompetitiveProgramming #DSA #DoublyLinkedList #WeeklyContest525 #CodingInterview #ProblemSolving