Two pointer technique. Aug 21, 2025 · The two pointer tech...

Two pointer technique. Aug 21, 2025 · The two pointer technique is one of the most common and powerful patterns used in competitive programming, data structures, and algorithms. [maximum consecutive ones iii, sliding window technique, two pointer approach, leetcode patterns, interview coding questions, array optimization, window resizing logic, dsa preparation] #leetcode #dsa #slidingwindow #codinginterview #softwareengineering". In this guide, we'll cover the basics so that you know when and how to use this technique. 🚀 50 Important Coding Questions – Question 13/50 🔹 Valid Palindrome | LeetCode (Easy) A classic Two Pointers + String Cleaning problem that builds strong fundamentals in string A must know for DSA and software engineering interviews. . 🔍 Problem - Only possible sum is 0 🧠 Key Insight: 🔄 Sort the array and use a two-pointer technique: Fix one element at a time (i) Use two pointers (left and right) to find the other two elements. 🚀 Solved another LeetCode Top Interview Problem! 📌 Problem: Remove Duplicates from Sorted Array II (LeetCode #80) 💡 Concepts used: Two-pointer technique, in-place array manipulation, O (1 In this video, we solve the classic 3Sum problem using the efficient Two Pointer technique. Once the array is sorted then we can use this approach by keeping one pointer at the beginning (left) and another at the end (right) of the array. Used an in-place two-pointer technique No extra space, clean 🚀 DSA Daily Challenge – Day 12 🧠 125. We use the two pointer technique for searching a required point or value in an array. Valid Palindrome (Easy) Today’s problem was a clean example of applying the Two Pointer technique with careful character handling. The idea is to use the two-pointer technique but for using the two-pointer technique, the array must be sorted. ISIMS CPC 4d󰞋󱟠 󳄫 Had a wonderful time learning about the Two Pointers Technique with CPC ISIMS Team ! 🥷 ️ +23 Bayrem Bensalem and 30 others 󰍸 In Two Pointer Technique, we typically use two index variables from two corners of an array. By using pointers, we can process two elements per loop, instead of just one. Problem Summary: You are given a binary array (0s and 1s) and an integer k. Used the classic two-pointer technique: 🔹 Slow pointer → moves 1 step at a time 🔹 Fast pointer → moves 2 steps at a time If a cycle exists, both pointers will eventually meet. It helps solve problems that involve searching, sorting, or traversing arrays, strings, or linked lists in an efficient way. Jul 8, 2025 · The two-pointer technique is one of the most elegant and efficient algorithmic patterns in computer science. This is a very popular Data Structures and Algorithms (DSA) interv Day 21 of Daily DSA Practice Solved on LeetCode: • #345 – Reverse Vowels of a String • #151 – Reverse Words in a String Key learnings: • Two-pointer technique makes string manipulation Solved LeetCode 27 – Remove Element today 💻 What looked tricky at first turned out to be simple and fast with the right approach. Apr 4, 2025 · In the two-pointer approach, pointers refer to an array’s indexes. Feb 13, 2026 · The Two-Pointers Technique is a simple yet powerful strategy where you use two indices (pointers) that traverse a data structure - such as an array, list, or string - either toward each other or in the same direction to solve problems more efficiently Two pointers is really an easy and effective technique that is typically used for Two Sum in Sorted Arrays, Closest Two Sum, Three Sum, Four Sum The Two Pointer Technique The two pointer technique is a near necessity in any software developer's toolkit, especially when it comes to technical interviews. By using two pointers to traverse data structures (typically arrays or strings), we can Aug 2, 2025 · M Umair Ullah Posted on Aug 2, 2025 What I Wish I Knew Before Learning the Two Pointer Algorithm # dsa # programming # cpp # 2pointers 🚀 Mastering the Two Pointers Technique in DSA The Two Pointers technique is one of the most efficient and elegant solutions for solving array and string problems that involve searching, partitioning, or Learn how to use two pointers to iterate through a data set in a controlled way and solve problems that involve searching, comparing, or finding patterns. Common patterns in the two-pointer approach involve: Two pointers each starting from the beginning and the end until they both meet One pointer moves at a slow pace while the other pointer moves at a faster pace Both of the above patterns can help Day 30 of my 365 Days Coding Challenge on LeetCode 🚀Today’s problem: 557 – Reverse Words in a String IIIWe solve it using the Two Pointer approach, an effic In this video, we solve LeetCode 1004 – Max Consecutive Ones III using the Sliding Window (Two Pointer) technique. See examples, code, and suggested problems for practice. 5gkhu, zuwaw9, 1btcc, iov6m, ks1l, on8qe, rjxht, nd9wy, l9ai, tbs4,