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LeetCode 3105 | Longest Strictly Increasing or Strictly Decreasing Subarray | Python | AlgoYogi

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Sep 12, 2025
12:34

Welcome to AlgoYogi! 🚀 Start Your Smart Coding Prep at 👉 https://algoyogi.io We solve **LeetCode 3105: Longest Strictly Increasing or Strictly Decreasing Subarray** using Python and a single pass approach with monotonic counters. The goal is to return the length of the longest contiguous subarray that is either strictly increasing or strictly decreasing. 👉 Problem Link: https://leetcode.com/problems/longest-strictly-increasing-or-strictly-decreasing-subarray/ --- ### ⏱ Timestamps 0:00 Introduction 0:20 Problem Statement 0:50 Monotonic Counters Approach 8:00 Python Code Walkthrough 11:30 Time & Space Complexity --- ### Why Watch? - Learn to track both increasing and decreasing sequences in one loop - Handle equal adjacent values by resetting both counters - Excellent pattern for array problems involving local monotonic trends #LeetCode #LongestStrictlyIncreasingOrDecreasing #Python #AlgoYogi #ArrayPatterns

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LeetCode 3105 | Longest Strictly Increasing or Strictly Decreasing Subarray | Python | AlgoYogi | NatokHD