Given n balls of radius r and the vector p (nx3) with all position (x,y,z) of the balls, return the symmetric matrix A (nxn) containing all distance between the centroid of all balls (diagonal terms should be all 0).
Two or more balls can overlap.
Perhaps the "default" solution should not be the one actually solving the problem?
I think there is some rounding difference here... :-(
The Hitchhiker's Guide to MATLAB
First non-zero element in each column
Sum of diagonal of a square matrix
Create a two dimensional zero matrix
Find the function
Center of mass
frame of the matrix
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