A place where all progress on competitions would be collected and pushed after the end of competitions and results would be sounded.
The playgrounds where I registered and successfully participated:
- hackerrank.com
- codechef.com
- topcoder.com
- bubblecup.org
coursera.org also very useful to train in any Algorithm courses for example I finished Tim Hougarden Stanford course. Codezera Android app
List of Algorithms: Steiner Minimal Tree result.
Could be usefull because it has Fermat Torricelli Point algorithm in triangles and intersection of line segments algorithm, vector product. Prim Minimal Spaning Tree.