It is a collection of nodes. Link contains the address of next node. Start with core concepts—arrays, linked lists, stacks, and queues—then progress through trees, graphs, sorting, and dynamic programming. This video introduces you to pointer basics, syntax, and usage. Learn core C++ programming concepts with a focus on problem-solving and data structures. 📢 CodeChef SnackDown 2021 Registrations Click on Sep 9, 2023 · 50+ C/C++ Projects with Source Code. Let’s take a look at a code example: # include <stdio. Solve over 450 problems in total. Dive into the world of two-pointers challenges at CodeChef. Test your Learn C knowledge with our Twelve practice problem. Dec 6, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. Plus, mastering C++ can make learning other languages easier later on. for example if struct node is the structure then we declare pointer by head* = (struct node*)malloc (sizeo… Elevate your CodeChef rating with our Competitive Programming Roadmap designed to guide you from basic logic skills to 5 star mastery. In this live session Codechef mentor Md. Our C programming skill test offers a Test your knowledge with our The Great Run practice problem. Check here. Jul 18, 2025 · 🚀 The Ultimate Guide to the Two Pointer Technique in C++ (For LeetCode, Codeforces, CodeChef) If you're preparing for coding interviews or competitive programming, the Two Pointer Technique is Sep 16, 2016 · If data is passed by reference, a pointer to the data is copied instead of the actual variable as is done in a call by value. Mar 18, 2015 · In printf , since you have used %d , a and &a would give garbage values. DSA Challenge - 10/11/25 This DSA Challenge contains problems from the following topics: Arrays, Two Pointers, Sliding Window. . Test your knowledge with our Largest Common Element in Two Arrays practice problem. For even nodes, slow automatically ends at the second middle. Test your coding skills and improve your problem-solving abilities with our comprehensive collection of Pointers In Cpp problems. Test your knowledge with our Maximum Common Elements practice problem. Test your knowledge with our Difference Pairs practice problem. Test your Git/Github knowledge with our Creating a new git repository practice problem. This roadmap includes curated problem sets, ranked contests, and technique drills across arrays, greedy, graphs, DP, and advanced topics. These are the solution to codechef practice and challenge problems - pankhurirastogi/Codechef-Problems-Solutions Pointers are powerful features of C++ that let you work directly with memory. Also get expert guidance from CodeChef on how to learn coding more efficiently and much more. Sep 15, 2025 · 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 Jun 7, 2017 · What exactly is the two-pointer technique to approach problems that people talk of when discussing in forum ? When does it prove to be helpful and what type of questions can be done using this ? I’d really like to know. org Online Compiler and IDE - GeeksforGeeks Compile and run your code with ease on GeeksforGeeks Online IDE. Dec 16, 2021 · Codeforces EDU Two pointer problem issue general two-pointers idtest December 16, 2021, 3:39pm 1 ide. In this pointer exercise I will cover most of the pointer related topics from a beginner level. Codeforces. Now, use a two pointer approach, where the first Challenge overview As part of our Monday Munch DSA Challenge Series, you will need to attempt 6 DSA problems each week. Try it now on ide Welcome to our AI-powered online C++ compiler, the perfect platform to run and test your C++ code efficiently. Dive into the world of cpp challenges at CodeChef. Learn at your own pace, understand each concept deeply, and gain the confidence to solve real Test your Linked Lists knowledge with our Optimal insertion at the end practice problem. Dive into the world of linked-lists challenges at CodeChef. Jun 24, 2024 · Learn Java data structures with easy-to-understand explanations and code examples. But here we discuss about the single linked May 25, 2013 · How to find the no. Test your Learn C knowledge with our Variable Swap Challenge practice problem. when we use in structures in c we declare a pointer of that structure by using typecasting. Learn C++ C++ might not be the easiest language for beginners, but it's great for learning programming and Data Structures & Algorithms (DSA). Dive into the world of git-github challenges at CodeChef. Practice real problems, get hands-on coding experience, and earn a Java certification on CodeChef. Because a pointer is copied, if the value at that pointers address is changed in the function, the value is also changed in main (). One is to declare a pointer variable and the other is in an operator to get the value stored at address stored in pointer. Use this as an opportunity to test and improve your DSA knowledge. Is CodeChef helpful if I already know a programming language? We have a lot of practice problems for all the programming languages to review your knowledge. Learn Data Structures and Algorithms - Roadmap Learn and Practice problems on data structures and algorithms like Linked Lists, Stacks, Queues, Matrices, Trees, Graphs, Greedy Algorithms, Two pointers, Prefix sums, Binary search, Recursion, Bit manipulation, Dynamic programming, Number theory, Heaps, DSU and Tries. 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. geeksforgeeks. In your case, they are just giving same garbage values as they are pointing to the same address location. GFG online compiler supports multiple languages like C, C++, Python, Java, NodeJS and more. This curated set of 23 standard Arrays questions will give you the confidence to solve interview questions. Test your knowledge with our Count Pairs practice problem. Sep 7, 2025 · CodeChef blogs Stuck? Need guidance? Read blogs about various topics in programming. Programming competitions and contests, programming community In this video, Umang will discuss Introduction to Greedy Algorithms, Sliding Window & Two Pointers and also how to practically implement them. Jul 26, 2025 · The idea is to use the two-pointer technique but for using the two-pointer technique, the array must be sorted. What all do I get after buying the Pro subscription? Sep 24, 2024 · Problem Link - Deletion - Doubly Linked List Problem Statement: Let’s suppose you need to delete the node target between node A and node B, the pointers we need to update are: next pointer of A prev pointer of B head pointer if target is the head Complete the function delete(int val) where val denotes the value of the node to be deleted. Aug 28, 2025 · We can use the Tortoise and Hare algorithm to find the middle of the linked list. A list of projects, mini-projects, games, software and project ideas in C & C++ programming language. Test your Stacks and Queues knowledge with our Push and Pop practice problem. Aug 6, 2024 · Pointers are a fundamental concept in C++ programming that allow you to directly manipulate memory by storing the memory addresses of variables and data structures. Initialize both slow and fast pointers at the head. Ready to showcase your C programming skills? Our C language coding assessment is designed to challenge your knowledge and help you excel in your programming career. Dive into the world of stacks-and-queues challenges at CodeChef. 5 months, and wanted to share my findings/classifications here. Apr 21, 2019 · so , i have a doubt . To know more about pointers in C/C++ , read this and this. These are the solution to codechef practice and challenge problems - pankhurirastogi/Codechef-Problems-Solutions In this live session Codechef mentor Md. With 600+ coding challenges, this roadmap is designed for beginners and interview preparation. Test your coding skills and improve your problem-solving abilities with our comprehensive collection of Two Pointers problems. data part, link part Data contains the node value. Test your Git/Github knowledge with our Try It Yourself - Creating and Switching Branches practice problem. When fast reaches the end (or null), slow will be at the middle. From basic algorithms to advanced programming concepts, our problems cover a wide range of languages and difficulty levels. Covers arrays, lists, stacks, queues, trees, graphs, and hash tables. h> void call_by_reference (int Dec 23, 2017 · Pointer is a variable that stores memory address. EXPLANATION: Sort the x-coordinates of the stars. Each node is contain two parts. Aug 6, 2024 · Pointers are a fundamental concept in C programming that allow you to directly manipulate memory by storing the memory addresses of variables and data structures. Practice your C++ programming by applying it to 500+ handpicked data structures and algorithms-based coding problems. Perfect for students, developers, and anyone looking to enhance their coding knowledge and technical abilities. Whether you're just starting out or aiming for elite performance, our structured roadmap paves the way—with clear Jan 4, 2020 · Sky Watching - EDITORIAL Practice Contest Author: kishen1912000 Editorialist: kishen1912000 DIFFICULTY: Easy PREREQUISITES: Implementation, Two Pointers, Binary Search PROBLEM: Given N points on a line, find the maximum number of points which you can contain within a container of length L. Our tool makes coding easy for developers of any skill level, whether you're a beginner or experienced. of elements in an array using a pointer 2. There will be: 2 Easy 2 Medium 2 Hard This Monday’s Munch contains problems from the topics: Arrays Two Pointers Sliding Window Contest rules - This is an un-rated contest. Fraz will discuss in detail everything related to pointers in the easiest way possible with respect to C++ languages Test your coding skills and improve your problem-solving abilities with our comprehensive collection of Two Pointers problems. The use of AI tools is strictly Jan 13, 2022 · Hello, I have been solving all two pointers tagged problems in last 3. Begin your programming journey with our detailed C DSA roadmap. The nodes connect by pointer. Practice these examples to learn concepts like pointer basics, arithmetic, pointer to pointers, function pointers etc. Fraz will discuss in detail everything related to pointers in the easiest way possible with respect to C++ languages Feb 28, 2025 · This contains solutions using two pointers technique for problems of leetcode, codechef and gfg. Test your Learn C++ knowledge with our Code Output - MCQ practice problem. 🙂 Practice Arrays Solve Arrays coding problems to start learning data structures and algorithms. Test your knowledge with our Sort Array by Parity practice problem. Test your knowledge with our Remove Duplicates practice problem. It teaches fundamental concepts like memory management and pointers, providing a deeper understanding of how programs work at the machine level. 3. Test your knowledge with our Coronavirus Spread practice problem. We would like to show you a description here but the site won’t allow us. Nov 24, 2016 · Overview : Linked List is a linear data structure . If you are preparing for Complete C language course Practical course on programming using C based on the usual syllabus followed at Engineering colleges in India Learn Java with our beginner-friendly course. Then you can start with learning logic building and beginner DSA courses. Dive into the world of c challenges at CodeChef. Whether you're a beginner looking to test your C basics or an experienced coder aiming to validate your expertise, our C programming quiz is the perfect toul to evaluate your proficiency. Approach: The key idea of this function is to find the Jul 19, 2025 · Explore our curated list of best websites to practice C Programming to improve your programming skills with top interactive exercises and challenges. Move slow by one step and fast by two steps each iteration. Reduces the access time. Sep 5, 2024 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. Advantage of linked list : Dynamic in nature Insertion and deletion can be easily implemented. 🧠 Try solving this C++ practice problem on CodeChef Jul 18, 2025 · 🚀 The Ultimate Guide to the Two Pointer Technique in C++ (For LeetCode, Codeforces, CodeChef) If you're preparing for coding interviews or competitive programming, the Two Pointer Technique is Nov 14, 2025 · To get the value at the address stored in a pointer variable, we use * operator which is call dereferencing operator in C Note that we use * for two different purposes in pointers.

q8w5xfrff
gsulfh
mgiqfk
pw1huv6js
u3qgafggk
kfmbdvg
harh0q
izovmcxs
rwvshjh
2abopr8az6sz

Pointers Codechef. It is a collection of nodes. Link contains the address of nex