OEIS

晒程式碼

知識圖

其它

http://stanford.edu/~liszt90/acm/notebook.html

http://blog.csdn.net/shiqi_614/article/details/8228102

http://projecteuler.net/

https://www.hackerrank.com/backtoschool/?ref=cs4

http://www.careercup.com/

http://www.hsin.hr/coci/

http://leetcode.com/

http://blog.computationalcomplexity.org/

http://www.infoarena.ro/

https://www.interviewstreet.com/recruit2/recruiter

https://www.codeeval.com/

http://gcpc.nwerc.eu/index.php

http://acmicpc.info/

http://www.stanford.edu/class/stats191/

http://www.gild.com/

http://www.siam.org/