Sliding Window Two Pointers. Two Pointers Pattern Sliding Window Pattern Prefix Sum Pattern Fa

Two Pointers Pattern Sliding Window Pattern Prefix Sum Pattern Fast and Slow Pointers Pattern Top 'K' Elements Pattern Kadane's Algorithm Linked List In-place Reversal Pattern Monotonic Stack Pattern Overlapping Intervals Pattern Backtracking Pattern Modified Binary Search Pattern Tree Patterns Tree Iterative Traversal Tree Question Pattern In this video, I talk about the sliding window algorithm and explain it using leetcode examples. Sliding Window Technique - Algorithmic Mental Models Mastering Dynamic Programming - How to solve any interview problem (Part 1) These 3 problems are in reality the SAME problem. The meaning of SLIDE is to move smoothly along a surface : slip. Sliding window optimization is a technique that combines hashing and two pointers to improve the performance of the sliding window algorithm. rising or falling, increasing or decreasing, according to a standard or to a set of conditions. Sliding window usually has predefined size ("window size K"), while distance between two pointers changes during traversal. Sep 9, 2025 · Opposite Direction: Pointers at start and end, moving toward each other (e. Same Direction: Both pointers move forward, where one lags behind the other to form a range (e. Apr 27, 2024 · Importance of Two Pointers and Sliding Window Approach: Efficiency: These techniques often lead to optimized solutions with lower time and space complexity compared to brute-force or naive approaches. in 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. We would like to show you a description here but the site won’t allow us. WordReference Random House Unabridged Dictionary of American English © 2025 slid•ing (slī′ ding), adj. If you already know how to: Move pointers efficient The two pointer method is a helpful technique to always keep in mind when working with strings and arrays questions. Typically we use all of the elements within the window for the problem (for eg - sum of all elements in the window). It is giving me a hard time to differentiate between the two. L12. Welcome to our DSA Placement Series! 🎯In this video, we simplify the powerful Two Pointers Method ️ in a way that’s super easy to understand. ” In problems that require determining the maximum or minimum The two-pointer technique is a simple but powerful way to work with arrays, linked lists, or strings. The two pointer method is a helpful technique to always keep in mind when working with strings and arrays questions. DSA was HARD until I Learned these 20 Patterns: 1. good luck! Step-8 : Bit Manipulation Step-9 : Stacks and Queues Striver-A2Z-DSA-Sheet / Step-10 : Sliding window and two pointer Combined Problems Cannot retrieve latest commit at this time. Sliding definition: Varying in accordance with given conditions. It's a clever optimization that can help reduce time complexity with no added space complexity (a win-win!) by utilizing extra pointers to avoid repetitive operations. 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. Example: Input: 2 5 -8 2 3 -6 10 2 8 12 -1 -7 8 -15 30 16 28 3 Dec 21, 2019 · Overview Sliding Window is an extension of the two pointer approach where we use two pointers (left and right) to create a “window”. You will also find notes, and code for your specific language. We use start and end pointers to make up a window. Two-Pointer Sliding Window Algorithm One of the most common approaches to solve many algoritm problems is to apply some type of 2-Pointer approach. Maximum Points You Can Obtain from Cards | 2 Pointers and Sliding Window Playlist Given an array and a positive integer k, find the first negative integer for each and every window (contiguous subarray) of size k. Nov 4, 2020 · Count Occurrences Of Anagrams | Sliding Window Aditya Verma 305K subscribers Subscribed Aug 3, 2022 · Starting from 2 different arrays, for merging etc. To move or cause to move smoothly and quietly along a surface. Oct 25, 2025 · Two pointers and sliding window are optimization techniques for array and string problems. These techniques are widely used to optimize solutions for array and string problems, typically reducing the time complexity from O (n²) to O (n). Dec 22, 2024 · The sliding window is a method that involves maintaining a subset of data by using two pointers to define the “window. Master the word "SLIDING" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. Sorry if this isn't useful, but maybe my additional questions will give other people more details for how to answer. The author emphasizes the importance of considering the starting point, speed of pointers, and stop conditions when designing two-pointer algorithms. Consider the following problem: Sliding window / Two pointers When working with arrays, the sliding window is a popular technique for efficiently solving problems with just two-pointers. Two Pointers and Sliding Window Techniques Introduction Two-pointers is one of the most common problem-solving techniques that is used in many popular algorithms. Nov 2, 2025 · What Is the Two Pointer Technique? The Two Pointer approach uses two indices (pointers) to traverse data structures like arrays or strings, usually from opposite ends or at different speeds. This guide covers four essential patterns with execution traces and real implementations. Oct 12, 2022 · The flexible-sized window is a bit more complicated because we need two logics, the first is when to update the size of the window, and the second is when to update the pointer to a new 722,935 views • Mar 26, 2024 • Two Pointer and Sliding Window Playlist | Language Independent Course It's a clever optimization that can help reduce time complexity with no added space complexity (a win-win!) by utilizing extra pointers to avoid repetitive operations. So we'll start with a simple version, which focuses only on the two pointers. Mar 18, 2025 · Both the two-pointer and sliding window techniques are powerful methods for solving problems involving arrays and strings. While they share similarities, they are used in different contexts and L12. good luck! Can somebody suggest the problems for sliding window technique and two pointers? Codeforces problem set have the tag two pointers but it has random problems, I want 8-9 problems which covers every trick and concept of the topic. In this video, I talk about the sliding window algorithm and explain it using leetcode examples. By leveraging these techniques, developers can improve the efficiency and effectiveness of their solutions. Seem these topics are being asked in Oct 12, 2022 · The Sliding window uses one pointer and one variable for the window size to find a window within the sequence. It uses two indices that either start at different positions and move toward each other, or move in the same direction, to efficiently compare, scan, or rearrange elements. L2. This is done by using hashing to quickly look up the presence of an element in the window, and using two pointers to track the start and end of the window. Apr 20, 2021 · Sliding window algorithms can be implemented with a single pointer and a variable for window size. Problem: Minimum size subarray sum 971K subscribers Subscribed 16K 722K views 1 year ago Two Pointer and Sliding Window Playlist | Language Independent Course Nov 28, 2025 · Confused between Sliding Window and Two Pointers? Learn the exact decision framework to pick the right pattern for array and string problems instantly. There window has a two point and a fixed size and its slide until the end point arrive. Minimum Window Substring | 2 Pointers and Sliding Window Playlist take U forward 150K views 1 year ago 14:24 Sep 10, 2023 · Two-Pointer Approach: In some cases, you can think of the sliding window as a two-pointer approach, where two pointers (usually the left and right) roam through your data while maintaining a It can also be extended to multiple pointers across multiple arrays. The focus is to The two pointer method is a helpful technique to always keep in mind when working with strings and arrays questions. Learn Two Pointers and Sliding Window with Abhinav Awasthi| GeeksforGeeks Array in Data Structure Simplified for Beginners 2023 | Problems on Arrays Solved Step by Step Oct 25, 2025 · Two pointers and sliding window are optimization techniques for array and string problems. Two Pointers: https://lnkd. Then we move these two pointers to make the window slide. Prefix Sum: https://lnkd. The 2-Pointer approach is used to search over a list (or multiple list) in such a way that the time complexity can be minimised. Versatility: They can be applied to a wide range of problems in arrays, strings, and other data structures. In this playlist, you will learn about 2 pointers and Sliding Window in depth. A playground apparatus for children to slide on, typically consisting of a smooth chute climbed onto by means of a ladder. 957K subscribers Subscribed 5. The first pointer should not pass the second pointer. Sliding Window: https://lnkd. operated, adjusted, or moved by sliding: a sliding door. We keep a decreasing monotonic queue for finding a sliding window maximum. Jul 7, 2023 · Two Pointers have sub techniques such as slow, fast pointers in linked lists or sliding window. c. Advantages of Using Two Pointers Apr 18, 2025 · This document provides a detailed explanation of two essential algorithmic techniques: sliding window and two pointers. See examples of sliding used in a sentence. Also note that these approaches in general don't guarantee O (N) time because treatment for every step might take some time. How to use slide in a sentence. Learn how these methods streamline data processing, offering a powerful approach to enhance your programming skills and boost performance. n. Jul 2, 2023 · The Two Pointers, Sliding Window, and Prefix Sum techniques are powerful tools for solving algorithmic problems related to arrays and strings. A smooth, usually inclined surface or track for sliding: a water slide. Great Customer Service. com can put you or your class on the path to systematic vocabulary improvement. A fixed or variable-size window is moved through a data structure, typically an array or string, to solve problems efficiently based on continuous subsets of elements May 15, 2024 · What is the two pointers technique? A more flexible variation of the sliding window technique, the two pointers used in this technique can move independently or in tandem through data structures. Dec 22, 2024 · The sliding window is a method that involves maintaining a subset of data by using two pointers to define the "window. Two Pointers have sub techniques such as slow, fast pointers in linked lists or sliding window. This approach is best demonstrated through a walkthrough, as done below. b. Sep 3, 2020 · "Sliding Window algorithm template to solve all the Leetcode substring search problem" The template for sliding window is a little difficult to understand. Two Pointers uses two indices to traverse and solve problems on sorted arrays in O (n) time, ideal for finding pairs or subarrays meeting specific conditions. Whether you're Oct 1, 2024 · Sliding Window: This technique uses two pointers to create a window that can expand or contract, allowing for efficient subarray evaluations. SLIDING definition: rising or falling, increasing or decreasing, according to a standard or to a set of conditions. Sliding window: two pointers iterating over a list (where one pointer is always in front of the other), and they represent a “window” or sublist that expands or contracts as it moves sometimes we move the first pointer, sometimes we move the second pointer. L6. , Remove Duplicates from Sorted Array). Learn "Two Pointers Technique in Java" with our free interactive tutorial. Like in two pointers, you might do fast/slow, whereas sliding window varies in how you grow/shrink windows. HC Spacing, for Vertical Sliding Windows, White at Tractor Supply Co. 1. , 2-Sum, Container with Most Water). The main idea behind two pointers technique is that we maintain two variables denoting two different indices in the array and those two variables are moved based on some condition. For example, sliding window problems might involve contiguous values: Two Pointers vs Sliding Window Sliding window problems are similar to the same directions problems, only instead, the function performs on the entire interval between the two pointers. Can somebody suggest the problems for sliding window technique and two pointers? Codeforces problem set have the tag two pointers but it has random problems, I want 8-9 problems which covers every trick and concept of the topic. Ideal for coding interviews and skill development. Master this essential concept with step-by-step examples and practice exercises. A sliding movement or action. 3. They're not the same, you use two pointers to achieve sliding window but you don't use sliding window to achieve two pointers. An increasing monotonic queue would only work for finding the sliding window minimum, as it removes large numbers and keeps small numbers. A part that operates by sliding, as the U-shaped section of tube on a trombone that is moved to change Whether you’re a teacher or a learner, Vocabulary. Split array and then start a pointer from each. g. Master Two Pointers & Sliding Window Techniques Solve 25+ handpicked LeetCode problems using two of the most powerful patterns in DSA. When is this technique useful? This is a common pattern that can be used in a wide range of algorithms. Problem: Minimum size subarray sum Approach (Sliding Window / Two Pointers) Key Idea Since all elements are positive: Expanding the window (right pointer) increases sum Shrinking the window (left pointer) decreases sum This Comprehensive study plan with weekly LeetCode problems covering Two Pointers, Sliding Window, Binary Search, and more. Aug 3, 2022 · Starting from 2 different arrays, for merging etc. 9K 239K views 1 year ago Two Pointer and Sliding Window Playlist | Language Independent Course Dec 19, 2023 · Two Pointers 通常比較兩個指標上的值，分為左右指標與快慢指標。Sliding Window 算是廣義的左右指標中的一種，可以有兩個指標或一個指標搭配一個窗口大小，通常使用窗口內的所有元素來解決問題。 Sep 3, 2020 · "Sliding Window algorithm template to solve all the Leetcode substring search problem" The template for sliding window is a little difficult to understand. Two-Pointer Two-pointer technics consist in comparing values at the two pointers. Jul 14, 2022 · Motivated by my successful solution to the “Longest Substring Without Repeating Characters” problem on Leetcode, I eagerly present the “Sliding Window” technique, a simple yet intriguing method that leverages two pointers to achieve optimal performance. this is the key to understanding how sliding window works. Buy Prime-Line Sash Lock with Face-Mount Keeper, 2-1/16 in. ” This window can slide or expand/shrink based on certain conditions. Jan 28, 2024 · The Sliding Window technique extends the two-pointer approach by employing a pair of pointers to establish a dynamic “window. Includes detailed explanations, problem links, and clear strategy breakdowns for both fixed-size and variable-size window problems. How? A sliding window uses two pointers; the difference in my head is that the window includes all elements in between those two pointers to some effect. in/gAs6WZ6X 3. The main idea behind the sliding window technique is to have a left and a right pointer and to slide those in the correct direction when appropriate. Longest Substring With At Most K Distinct Characters | 2 Pointers and Sliding Window Playlist Each time you increase the left pointer, you're knocking out all the substring/subarrays that are rooted at that left pointer (it's impossible to consider them again - and for good reason: the condition would not be satisfied by *any* subset rooted at that left pointer). If your personal moment of fame seems to be sliding past, do a personal inventory. This technique is particularly useful for solving substring problems, finding subarrays with specific properties, or calculating running averages. If two pointers point to the same array and move in the same direction without intersecting, this is also known as a sliding window (the area between the two pointers represents the current window), often used for interval searching. . Minimum Window Substring | 2 Pointers and Sliding Window Playlist take U forward 150K views 1 year ago 14:24 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. Nov 24, 2024 · The sliding window technique frequently works hand-in-hand with the two-pointer algorithm (especially in problems involving dynamic window sizes), as they share a common principle: optimizing A sliding window uses two pointers; the difference in my head is that the window includes all elements in between those two pointers to some effect. in/g2EXKs32 2. Dec 29, 2021 · Hi guys, I am trying to figure out what is the main difference between the Sliding Window and Two-pointer technique. " This window can slide or expand/shrink based on certain conditions. For example, sliding window problems might involve contiguous values: Sliding Windows and Two Pointers | Sliding Window efficiently finds the maximum or minimum sum of k consecutive elements by maintaining a dynamic subarray, reducing complexity to O (n). 2. 2 slow pointers starting from the beginning of the array, variable / sliding window technique. You will learn how the Two Pointer pattern works for problems like palindrome checking, comparisons, and validations, and how the Sliding Window pattern is used to solve substring problems Day 24 of Learning Java DSA : Today I revised some problem-solving concepts along with example problems I’ve already worked on: Sliding Window Protocol : Revisited how the window expands and Backtracking is not a hard topic — it’s simply the next DSA pattern afterTwo Pointers and Sliding Window. Problem: Minimum size subarray sum c. a. Nov 4, 2025 · A complete guide to two-pointer and sliding window techniques with examples, logic, and Python implementations. Jan 7, 2023 · In the above story, sliding window game works like our sliding window algorithm. Each time you increase the left pointer, you're knocking out all the substring/subarrays that are rooted at that left pointer (it's impossible to consider them again - and for good reason: the condition would not be satisfied by *any* subset rooted at that left pointer). Jan 5, 2017 · Synonyms for SLIDING: sneaking, lurking, slipping, crawling, stealing, slinking, snaking, skulking; Antonyms of SLIDING: struggling, floundering, stumbling, shuffling, trudging, limping, plodding, lumbering Apr 20, 2021 · I was wondering about the significant difference between 'sliding window' and 'two pointer' problem. The sliding window technique is acknowledged for its simplicity and effectiveness in handling subarray problems, with the flexibility to adapt to fixed or variable-sized windows. Oct 20, 2018 · Use slow and fast two pointers to update window Construct a wordDict with HashMap Forward the fast pointer to check if any character belongs to the dict keys Sep 16, 2020 · We would like to show you a description here but the site won’t allow us. While they share similarities, they are used in different contexts and May 20, 2025 · Discover the ultimate guide to efficient algorithms! Uncover the secrets of 'sliding window' and 'two pointers' techniques, perfect for optimizing your code.

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