Concepts4

Mo's Algorithm

Mo's algorithm answers many range queries offline by reordering them to minimize pointer movement along the array.

#mo's algorithm#offline queries#range queries+12

Sliding Window

Sliding window is a technique that moves a contiguous segment (window) across an array or string while maintaining some running information like sum, count, or max.

#sliding window#two pointers#variable window+11

⚙️AlgorithmIntermediate

Two Pointers

Two pointers is a pattern where two indices move through a sequence in a coordinated, usually monotonic way to avoid unnecessary work.

#two pointers#sliding window#opposite ends+12

🗂️Data StructureIntermediate

Queue and Deque

A queue is a First-In-First-Out (FIFO) line where you add at the back and remove from the front in O(1) time.

#queue#deque#fifo+12