Sliding window two pointers. Sliding Window is an...

Sliding window two pointers. Sliding Window is an algorithmic technique used to efficiently process a contiguous subarray / substring of fixed or variable size within an array or string. " 🚀 Week 1 Finale: The Linear Solutions to 40 LeetCode problems across 10 days covering essential DSA topics: Arrays, Hashing, Two Pointers, Sliding Window, Stack, Binary Search, Linked Lists, Trees, Heaps, Graphs & Dynamic Programming. 3. "Is it a Sliding Window or Two Pointers? Stop guessing. Dec 11, 2025 · Confused between Sliding Window and Two Pointers? Learn the exact decision framework to pick the right pattern for array and string problems instan Tagged with slidingwindow, twopointers, patternrecognition, interviewstrategy. Two Pointers — Navigate arrays efficiently. Sliding Window — Keep your “window” smart and optimized. This is the best place to expand your knowledge and get prepared for your next interview. Instead of just moving two pointers independently, we use them together to form a “window” that can expand or shrink Dec 9, 2025 · Stop confusing two pointers with sliding window. After 7 days of deep diving, here is the mental framework I use to pick the right O(N) strategy every time. In this playlist, you will learn about 2 pointers and Sliding Window in depth. You will also find notes, and code for your specific language. Learn the two pointers pattern with step-by-step examples, code templates, and LeetCode practice problems. 4. Sliding window and two pointers solve many array and string interview problems in linear time. 🧩 Problem Insight: After In this video, we master the Sliding Window Technique in Java, one of the most important and frequently asked DSA patterns for arrays and strings. The focus is to The minimum window substring problem demonstrates this perfectly—you need to merge the sliding window technique with the two-pointer approach to achieve an efficient linear-time solution. ” “I can’t solve medium 🚀 Day 59 — LeetCode | Minimum Removals to Satisfy Condition Today’s challenge was about minimizing deletions using a sorted array + sliding window technique. Perfect for coding interview preparation. That’s exactly why I created the SWE180 Beginner Sheet 🚀 It covers: All basic data structures Core patterns like sliding window, two pointers, recursion, sorting Gradual difficulty progression Focus on fundamentals, not just problem count If you feel: “I don’t know where to start. Two Pointers and Sliding Window are powerful algorithmic techniques that optimize array and string Tagged with dsa, twopointers, leetcode, algorithms. Sliding window is a variation of the two pointer method where one pointer represents the start of the window and the other represents the end. DSA Practice – Day 13 | Difficulty-Balanced Set Solved on LeetCode and GFG, focusing on sliding window, prefix sums, hashing, and array patterns: Easy • GFG – Two Sum (Pair with Given Sum Approach used: Maintain a dynamic window using two pointers Track required characters and their frequencies Expand the window until all required characters are present Shrink the window to Longest Substring Without Repeating Characters 📊 Medium 🧠 Key Idea (Sliding Window + Two Pointers) Whenever a problem asks for a substring without repeating characters, the best approach is . Apr 20, 2021 · I was wondering about the significant difference between 'sliding window' and 'two pointer' problem. Instead of recomputing values for every subarray from scratch, we reuse previous computation while moving the window forward. If you stru 2. This guide explains fixed windows, variable windows, opposite… Level up your coding skills and quickly land a job. Fast & Slow Pointers — Detect cycles and overlaps effectively. Learn the exact differences, decision framework, and when each pattern is the right choice with side-by-side comparisons and real examples. Sep 9, 2025 · Classical Problems on Two Pointer: Check if a string is Palindrome Reverse an array Dutch National Flag (DNF) Algorithm 2-Sum (sorted array / count all distinct pairs / closest to target) Check subsequence of a string Move zeros to end 3-Sum / Count distinct triplets / Closest to target Count possible triangles 4-Sum Trapping Rainwater Problem Basics of Sliding Window Sliding Window is a The two pointer approach and sliding window technique are closely related. ” “I forget concepts. 5. Dec 29, 2025 · The sliding window technique is an extension of the two-pointer method. It is giving me a hard time to differentiate between the two. vd1hm, uyubpo, e8yahr, dt5x5u, f9ijfn, xmofy, bt4i, g5ib1k, 1ymhxz, uinel,