bop ------ questions in the book of Beauty of Programming

toffer ------ questions in the book of jian zhi offer

sort ------ algorithm and questions about sorting

asked ------ questions which were asked to write online or on paper

leetcode ------ questions at https://leetcode.com/onlinejudge

java ------ some practice code about java thread

jobdu ------ question from https://ac.jobdu.com/

topcoder ------ question from https://www.topcoder.com/

usaco ------ https://cerberus.delos.com:790/usacogate

others ------ mei xiang hao

简历：https://docs.google.com/document/d/1VTepwubvcALmrcJc_TGOyT0J1B9VvusedhCcvCBvRFg/edit?usp=sharing

android bluetooth game show https://v.youku.com/v_show/id_XNTQwMTM2MzYw.html