Big task: Create a URL shortener

For part 3, the Requirements state that the field should be named LastID but this won't verify, it has to be LastId as the main Conditions state. Just some confusing inconsistency.

Part 4 doesn't say how long the random string should be. Isn't that an important piece of information, or is it up to us to arbitrarily decide how long? Also, this is another problematic example of "google the answer"... In this case, googling exactly as they say returns results that don't even use the BigInteger class, so it's not helpful. Here are results I get when searching for this. https://www.baeldung.com/java-random-string https://stackoverflow.com/questions/20536566/creating-a-random-string-with-a-z-and-0-9-in-java https://www.geeksforgeeks.org/generate-random-string-of-given-size-in-java/ Since I'm not really sure how BigInteger would play a role in solving this, and the google results aren't helping, I'm going to press forward on a solution without BigInteger and see if it passes. Hopefully it's not one of the tasks that specifically checks for a certain class. I'm also just going to assume a length of 25, since it doesn't say. EDIT: My solution seems to work, but I can confirm that it won't pass validation unless you use BigInteger. The validation page unfortunately says "use your favorite search engine" but the search results don't use BigInteger. Thankfully, the validation page also essentially provides the solution they want. The we come to part 8, where I can see other people have also had a lot of problems. Part of the problem with this one is that they say that if you don't know what the methods should do, look up the corresponding methods for HashMap. But HashMap doesn't have any of those methods we're adding, so I'm not really sure what they are talking about. I worked on this on my own for a while and I figured I would do what I can and then use the solution for methods where I didn't even know what they were looking for. When I got to that point, I found that all of my work was very far off from what they were asking for. Found this part very discouraging, overall.

For part 14 (with JUnit tests), your support method testStrategy() MUST be public, or verification will fail. Though in the real world, I would have personally prefer to make all "helper" methods private... Also, for JUnit itself it does not matter.

part 8, here it starts that I say: boahh... this is really insane. I mentioned it before that I implemented already a lot of data structures including my own hash set. So I know how this is working (should work... in theory). However without any hint what the to implement methods should do this is haaaaarddd. Reaaaaalllly haaaard. Have just passed part 8 and now feel the need to share this. hihihi, now I've read part 9 requirements, getting interesting, too ohh, if your're German, than this is excellent study material from the HdM Stuttgart. Take a timeout for approx 3-4 weeks, watch the vids and code all the data structures he's talking of. Then you're prepared for this task. lil update: 9 and 10 are OK if you managed to code 8 and if you're fit with Files and Path classes (nio).

"almost impossible" they said

Not gonna lie, from about Task 9-10 I started copy pasting the solution... No background information, no prior explanations, just 'google' and expect me to solve only difficult tasks on my own. Sure buddy.

Read more on Wikipedia ... lol Don´t give up... al repositories needed are in Maven

This task is madness )

for 7th task: Create Entry class; dont create OurHashMap.... class and inside the class make Entry class ...