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Nearest neighbor search (NNS)

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This repository investigates different implementations of the Nearest neighbor search (NNS) problem or rather the fixed-radius near neighbor problem as variant of NNS problem for the application of smoothed particle hydrodynamics (SPH).

Examples

3D

Centered star and > 30000 particles in a disk.

Centered binary star and > 30000 particles in a disk.

2D

CollisionFreeQuadTree

CollisionQuadTree

NBodyQuadTree