2 docs tagged with "arrays"

Prefix sums (cumulative sums) are a foundational technique for speeding up range queries. They extend beyond arrays into matrices, trees, and even XOR or product computations, forming the backbone of many algorithmic optimizations.

Heaps are binary trees, so why aren't they stored like one? Discover why arrays are the perfect data structure for implementing heaps — and how heaps work in the first place.