- Given a water -tight orientable 2-manifold, how to find if a point is inside or outside its volume? - Given a bunch of points with their coordinates, how to merge closeby points together? - How to determine if the normals of the two triangles incident to an edge are wrongly/rightly oriented? - What was your favorite research paper that you worked on and why?

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Answering technical questions for Software Engineer 2 position

To determine if a point is inside or outside a 2-manifold, use the ray casting algorithm
To merge closeby points, use clustering algorithms like k-means or DBSCAN
To determine if the normals of two triangles are wrongly oriented, use the cross product of their edges
Favorite research paper and why

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