算法
数组、链表
- http://www.cppblog.com/cxiaojia/archive/2012/07/31/185760
 - http://blog.csdn.net/hackbuteer1/article/details/6591486/
 - http://blog.csdn.net/pony_maggie/article/details/38390513
 - AVL
 
- BST
 - B,B+,B-
 - http://blog.csdn.net/tonyxf121/article/details/8393545
 - http://blog.csdn.net/chenhuajie123/article/details/11900153
 - http://blog.csdn.net/ganggexiongqi/article/details/7449970
 - http://blog.csdn.net/yutianzuijin/article/details/11954939/
 
排序
Java
String,StringBuffer,StringBuilder区别
- http://blog.csdn.net/clam_clam/article/details/6831345
 - http://www.cnblogs.com/xudong-bupt/p/3961159.html
 
HashMap和HashMap区别,能否存储空值
- http://www.cnblogs.com/carbs/archive/2012/07/04/2576995
 - http://blog.csdn.net/wl_ldy/article/details/5941770
 
ArrayList和HashMap初始容量
- http://blog.csdn.net/java2000_net/article/details/5215882
 - http://ask.csdn.net/questions/178013
 - http://blog.sina.com.cn/s/blog_45ff7c3f0100bwan.html
 - http://blog.csdn.net/ghsau/article/details/16890151
 
并发编程,线程,线程池,加锁
- 并发思想
 - http://www.cnblogs.com/riskyer/p/3263032
 - http://blog.csdn.net/aboy123/article/details/38307539
 - http://blog.jobbole.com/76308/
 - http://developer.51cto.com/art/201509/490965.htm
 - http://blog.csdn.net/yangzhijun_cau/article/details/6432216
 - http://cuisuqiang.iteye.com/blog/2019372
 - http://www.cnblogs.com/lxzh/archive/2013/01/20/2868736.html
 
Comparable和Comparator的区别
- http://www.cnblogs.com/sunflower627/p/3158042.html
 - http://www.codeceo.com/article/java-comparable-comparator.html
 
GC回收分代和回收
- http://www.cnblogs.com/hnrainll/archive/2013/11/06/3410042.html
 - http://blog.csdn.net/kennyrose/article/details/7543696
 
Collections方法
- http://pengcqu.iteye.com/blog/492196
 - http://blog.csdn.net/lskyne/article/details/8961014
 - http://blog.csdn.net/ameyume/article/details/6282051
 - http://www.cnblogs.com/gw811/archive/2012/10/10/2719134.html
 
SQL
SQL基础,group by等,修改表结构
- http://www.cnblogs.com/mr-wid/archive/2013/05/09/3068229.html
 - http://www.cnblogs.com/hustcat/archive/2009/10/28/1591648.html
 - http://www.cnblogs.com/daxian2012/articles/2767989.html
 - group by
 
缓存机制和MySQL调优
- http://blog.csdn.net/wulantian/article/details/11043121
 - http://blog.csdn.net/gzh0222/article/details/8001362
 - http://www.cnblogs.com/adforce/archive/2012/06/02/2532086.html
 - http://www.cnblogs.com/not-code/archive/2011/11/01/2231493.html