retraini
  • Home
  • Tracks ▾
    • Complete DSA Mastery
    • All tracks →
  • Search
  • Profile
  • Settings
Home › Data Structures and Algorithms › Prefix Sum › 2D Prefix Sum

2D Prefix Sum

Published: Apr 27, 2026 · Last modified: May 30, 2026 · Takes about 15 min read

Extend prefix sum to matrices for efficient submatrix queries.

Introduction

Place a brief intro here. Each chapter typically contains: text, diagrams, code snippets, and links. See the placeholder examples below.

Saved locally to your browser.

← Previous 1D Prefix Sum Next → Prefix Sum + Hashing

Your progress

Not yet complete.

Chapters in this Course

  • 1D Prefix Sum
  • 2D Prefix Sum
  • Prefix Sum + Hashing

Other Courses

  • Two Pointers
  • Sliding Window
  • Binary Search
  • Recursion & Backtracking
  • Hashing
  • Stacks & Queues
  • Linked List Manipulation
  • Trees
  • Dynamic Programming
  • Greedy
  • Graph Traversal
  • Heap / Priority Queue
  • Trie
  • Bit Manipulation
  • Sorting & Order Statistics
  • Math & Number Theory

Recently viewed

    Tech Tutorials by Retraini

    Free, in-depth technical tutorials covering data structures, algorithms, and software engineering — taught with clear explanations and worked examples.

    • About
    • Contact
    • Privacy
    • Terms
    • FAQ

    © 2026 Tech Tutorials by Retraini. All content provided as-is for educational use.