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LeetCode #1480 | Running Sum of 1d Array | Easy Explanation

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May 5, 2026
5:02

LeetCode #1480 | Running Sum of 1D Array | C++ Solution | Easy Explanation In this video, we solve LeetCode Problem #1480: Running Sum of 1D Array using C++. I explain the simple and efficient approach to calculate the running (prefix) sum in a single pass. You’ll also get a clear dry run, intuitive explanation, and complexity analysis — perfect for beginners and interview preparation. 📌 Topics Covered: • Running Sum of 1D Array (LeetCode #1480) • Prefix Sum Concept • One-Pass Solution • Step-by-Step Dry Run • Time Complexity: O(n^2) • Space Complexity: O(1) (if done in-place) 💻 Language Used: C++ 🔥 Perfect For: • DSA Beginners • Coding Interview Preparation • LeetCode Practice • C++ Learners • Placement Preparation 📚 Problem Link: https://leetcode.com/problems/running-sum-of-1d-array/ 🔗 Connect with Me: Portfolio: https://vishvpatel-portfolio.netlify.app/ LinkedIn: https://www.linkedin.com/in/vishv-patel-976712394/ GitHub: https://github.com/vishvpatel210 LeetCode: https://leetcode.com/u/vishvpatel0210/ 👍 If this helped you: Like 👍 | Subscribe 🔔 | Comment your next problem #leetcode #runningsum #prefixsum #cpp #cplusplus #dsa #datastructures #algorithms #codinginterview #leetcodecpp #arrays #programming #coding #softwareengineer #placementpreparation #faang #techinterview #interviewquestions #competitiveprogramming #cppcoding #learntocode #beginnerscoding #leetcodebeginner #problemsolving #vishvpatel #codebatch

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LeetCode #1480 | Running Sum of 1d Array | Easy Explanation | NatokHD