As I said in the user manual, I don't have time to comment on people's work individually, but:

1) you can listen and comment on each other's work
2) once you have seen and studied the whole series of solutions I will post, many questions will be answered
3) I will answer GENERAL questions. So, for example, "is m. 5 in my assignmennt OK?" won't get an answer. But, "is it necessary to use the entore string section", *will* get an answer. So, try to ask general questions which will benefit everyone!