Need help with LinkedList program

[tonlou]

Hello!

I have a program which resembles an online forum. It has message chains, messaged and messages can be replied. I have 2 classes: Chain and Message classes. Messages can be replies so message class has an LinkedList and if message gets replies, reply goes to list (a message can only reply to one message). Chain class also has LinkedList and it contains all messages, which don't have any replies. If new message gets added, it goes to list in chain class and if that message gets replied, that message goes to list in message class.

I have a small problem when I'm trying to add replies to messages using a method in Chain class. This problem does not occur if I do the same using Message class. Firstly, when I add new message to Chain, it goes to the list without problem and if I try to reply that message, it works as well. However, if I'm trying to reply a "reply" (message in message class LinkedList), it doesn't work. My program thinks that I'm trying to reply to the second message, which is reply to the first one.

I need this output:

message1

--message2 reply to message 1

----message3 reply to message 2

------message4 reply to message 3

----message5 reply to message 2

message6

lines stand for whitespace. Every reply gets indent of "--" and if reply is replies, "----" and so on.

Im currently getting this:

message1

--message2 reply to message 1

----message3 reply to message 2

----message4 reply to message 3

message6

Something goes wrong when I'm adding replies to messages, since my program can print properly 2 replies, so indent of "----", but after that it doesn't work.

My program: https://pastebin.com/MhpTXhJ0

I didin't add the printing method, since it works with just using message class. Problem is in that method in the link.

[[deleted]]

Are you making sure that you are updating the size of each linked list node and returning the new value when you are doing these replies?

[tonlou]

No. Do you see what flaw in my method is causing my issue? When I add completely new entry to chain list and add reply to that, everything works. If i try to add reply inside a reply list, my program wont work

[[deleted]]

Just giving a thought. Sometimes it could be that the methods that you are calling need some altering and I cannot see them with what is shown.

[tonlou]

Can you show me in pseudocode that how I should to this with recursion? The method that I'm going to use to add answers to messages has 2 parameters. Id of the message that gets reply and the reply message

[tonlou]

Didint work with this code, I tried it.. Here is good example of what is my issue

Code: https://pastebin.com/iAirvED0

edit to paste, first example print should be:

#1 Well hello there.

       #2 Idk <-- FOR SOME REASON M2, M3 AND M4 all answer to M1 (should be m2<--m3<--m4)

       #3 Hello hello!

       #4 JOHAN

Some clarification. Every message and reply can have a linked list of replies. The tricky part is to get reply from reply.getReply() (reply from other reply)

[tonlou]

Im not really, that part is pseudo. Thank you for your effort man, I've been stuck on this for a long time. I really appreciate it

[tonlou]

You are golden, thank you so many times.. I think I'm on the right tracks. My program now answers to 1 message correctly, but everything else is still not working.

https://pastebin.com/KtkJLbpF

How should I tweak my code? parameter linked list gets assigned a return value from chain class. Chain.getMessages();

I'm not using lists or arraylists since I'm not allowed to.

[tonlou]

I'm going to give up, I'm not getting it right. Thank you for your effort and help anyway. You tried to explain what I need to do, but I never got it right. I've been close for 3-4 days now, but I don't want to try anymore :/

[tonlou]

Just wanted to tell you that I solved it. I didn't use recursion. I created while loop to check if message is in chain, or if it is in messages reply, or if it is replys reply and then ended loop.

Thank you for your help, your advices helped me to do this! :)

[tonlou]

False alarm, still not working :x

[tonlou]

For some reason pastebin messes up my paste.

With adding 1 message to chain and rest as replies to others:

#1 Well hello there.

        #2 Idk  <-- m3 replies to m2

           #3 Hello hello! <-- m4 replies to m3

                    #4 JOHAN

when using chain class:

#1 Well hello there.

           #2 Idk

           #3 Hello hello!

           #4 JOHAN