[heap] heap

http://www.diku.dk/forskning/performance-engineering/Jesper/heaplab/heapsurvey_html/rapport.html

http://www.cs.yorku.ca/~utn/c2011/heaps_part2.pdf

http://www.informatics.susx.ac.uk/courses/dats/notes/html/node170.html

http://snowhite.cis.uoguelph.ca/faculty_info/xli/courses/cis2420/c7.pdf

http://www.site.uottawa.ca/~flocchin/CSI2114-04/SLIDES/08-6pp.pdf

http://www.awprofessional.com/articles/article.asp?p=29793&seqNum=4

http://www.informatik.uni-bonn.de/~ralf/talks/MPC02.pdf

http://www.cs.ucf.edu/~reinhard/classes/cop3503/lectures/HeapSort01.pdf

http://www-1g.cs.luc.edu/~van/cs460/lecture13/

http://venture.incheon.ac.kr/ius_bbs/iusboard_data/develop/heap_sort.c