Hello world

Every day I face different programming tasks and quizzes. Many of them are unfamiliar to me. These tasks are either from my work or my personal ideas. I solve them sooner or later and this makes me happy and proud. But if I never face them again I can easily forget the solution and after passing two or three years I need time to solve it again painfully remembering something so familiar. So to avoid wasting time I decided just to collect all solved problems here. I hope this intention will last for some time and will be helpful, maybe not only for me.