millions of 3d points how to 10 closest to origin
Posted
by Kazoom
on Stack Overflow
See other posts from Stack Overflow
or by Kazoom
Published on 2010-03-21T05:47:06Z
Indexed on
2010/03/21
5:51 UTC
Read the original article
Hit count: 407
A point in 3-d is defined by (x,y,z). Distance d between any two points (X,Y,Z) and (x,y,z) is d= Sqrt[(X-x)^2 + (Y-y)^2 + (Z-z)^2]. Now there are a million entries in a file, each entry is some point in space, in no specific order. Given any point (a,b,c) find the nearest 10 points to it. How would you store the million points and how would you retrieve those 10 points from that data structure.
© Stack Overflow or respective owner
