# hash와 tree의 차이


hash - O(1)를 보장, 범위를 잡아서 서치할 수 없음

Tree - O(log N)... 범위잡기 가능



DBMS에서...

: index의 범위검색은 같은수의 random access에 배해 disk I/O가 훨씬 적음

http://dev.mysql.com/doc/refman/5.5/en/index-btree-hash.html



Java HashMap은 어떻게 동작하는가?

http://helloworld.naver.com/helloworld/textyle/831311

http://www.sorting-algorithms.com/


http://en.m.wikipedia.org/wiki/Stable_sort#Stability


http://forums.codeguru.com/showthread.php?362340-How-to-make-selection-sort-stable


http://m.egloos.zum.com/sweeper/v/920985


http://visualgo.net/ufds.html


http://blog.naver.com/PostView.nhn?blogId=godinus123&logNo=220261110069



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