(no subject)
I've been having fun with hackerrank in my spare time. They basically gamified programming practice, so you just do these little mini-assignments and then run a suite of tests, and see what passes. They have a variety of topics, so I do this stuff in my spare time for fun.
I've implemented basically everything in C at this point, and probably thousands of times, after twelve years of C development. I can write a hash table, tree, graph, basically anything in C, probably in my sleep.
I'm going through lots of C++ assignments on hackerrank, too, getting to memorize the different aspects of the language to let it become second nature.
I don't have the time anymore, but I would still love to write Android apps. So many fun projects are possible...