У вашего броузера проблема в совместимости с HTML5
This videos walks you through programming data structures, in Java. These skill can then be applied to pretty much all other programing languages. this video start you off with the basics, on how to organize sort and search data efficiently, and calculate the algorithm of Big O, for example O(n), O(n^2), O(1), O(log2 (n)), O(n log(n)) and more