我不当菜鸟

problem: a list : 3, 4 , 7 ,2 ,1 ,6 ,5, 9    a set: 2,3, 5,6        find how many interleaves the list is partitioned by the set.  The answer to the above problem :  3, 4 , 7 ,|  2 ,1 ,|  6 ,5, ...

http://en.wikipedia.org/wiki/R-tree 

http://en.wikipedia.org/wiki/Quadtree

http://en.wikipedia.org/wiki/Kd-tree