how does the episode with the murderers and the attempt to save them develop hucks sense of morality?what is his current code ? from what has he developed this code thus far?

Huck feels that he has to attempt to save the lives of the murderers simply because they are human beings......... he doesn't stop to think about the things they've done......... his code of morality is to do the right thing. This is the same outlook he has on his commitment to Jim; Huck says that if helping Jim means he'll go to hell........... well, then he'll go to hell.

Huck don't care at all and no one even notice him.