adding few functions for right and left legs collision

[hrahmanin]

No description provided.

[golobor]

could you please exclude .ipynb_checkpoints from the commit?
(typically, this is prevented via .gitignore)

[golobor]

another minor suggestion - i think there may be a much more efficient implementation of the search via np.searchsorted(l_sites, r_sites)

[hrahmanin]

@golobor Thanks for your comment regarding the np.searchsorted function. I now understand that it finds the positions where elements should be inserted to maintain order between two lists. However, in my case, I'm looking for elements with an exact difference of 1 between the arrays.

[golobor]

Hi Hadi,
You're right, but my point is that you could speed up your algorithm if you were to use searchsorted to find consecutive legs of smcs and then checking for distance==1