深入理解Java集合框架

https://github.com/CarpenterLee/JCFInternals

0-Introduction.md	change some style	a year ago
	1-Overview.md	fix one error	a year ago
	2-ArrayList.md	correct a typo	a year ago
	3-LinkedList.md	add ArrayDeque when use as stack or queue	a year ago
	4-Stack and Queue.md	improvement	a year ago
	5-TreeSet and TreeMap.md	Update 5-TreeSet and TreeMap.md	3 months ago
	6-HashSet and HashMap.md	correct some typo	a year ago
	7-LinkedHashSet and LinkedHashMap.md	修正排版	4 months ago
	8-PriorityQueue.md	make a supplement	a year ago
	9-WeakHashMap.md