froydnj/trees — pull request #3 by rpav (2012-05-21 14:51:38+00:00)
Title: :INTERVAL trees, interval trees test.

Interval trees, a la:

http://en.wikipedia.org/wiki/Interval_tree#Augmented_tree

Though the first edition Cormen, et al. was primarily referred to (and is clearer):

Cormen, Thomas H.; Leiserson, Charles E., Rivest, Ronald L. (1990). Introduction to Algorithms (1st ed.). MIT Press and McGraw-Hill. ISBN 0-262-03141-8.