Simple concepts are defined in such a way to lead programmers to failures, this is policy of this site to somehow pretend it is still somehow relavant, example tail defined in such a way that it will be always tail in linked list, and somehow cannot have an index to be deleted or replaced, insertAtIndex/delete functions always used at the begining and end, to look smart and force the coder to use if else all the time instead of writing constructors and desctructors, and cause you not to develop good habbits in programming and just write everything in a single c sytle out-dated functions that return nothing and do all the work, it is absoloutly annoying and bad habbit. at first galnce I liked this website but it seems this website only develop bad and avoided habbits in programming specially C++ programming.
I wish I could delete my account but there isnt an option for that even, it only has shiny pages to keep you in and thats good but not with this syle of coding.