1. You must find a way to do it 1
2, because of the special nature of my study, the lack of system, should strive to build a system and can cause some functions do not really know usage. For example, list the index, currently feeling very humanity
3. embodies many subtleties
Such things can not traverse range is int, possible duplication of digital data set, index range and can be added without does not work, can be said in the range of -1 is the last, the last but causes less than a traversal may direct air with, but could not find trouble, could not find an error, you can use try catch solve
Before doing this I can question wrong, it was the rabbit
result
Shannon really make up their faces
Creak