itree | Interactive tree command for file system navigation | Navigation library

there may be collision of Compare methods.

try composition instead of inheritance:

For INode n left right you here aim to return, based on the use of (++) a list of elements. But the types do not match anyway, since n-1 is an Int not a list.

If you want to decrement the items in a tree, then you should for each ITree also return an ITree. So the skeleton should look like:

You could either do it recursively or with iterations, it's up to you.

I find recursive solution slightly easier to read. It would look like this:

Now, since Zinf is also Num, I can write down the following:

You don't get a class cast exception here, you get an incompatible types compiler error.

You can do an unchecked cast:

Your types cannot be found, as the package currently uses a wrong types path in package.json. You can change the types field like this:

your question is unclear but best pratices are to follow How to write a custom estimator in sklearn and use cross-validation on it? to write a custom estimator and write an implementation of fit() method with appropriate rules, else it can be very confusing,

As Python use duck typing, try avoid this complication and use sklearn.BaseEstimator

use TreeSet, by implementing Comparator interface and providing reverse sorting logic and finally add all elements of HashSet to TreeSet using addAll() method of Collection interface.

An ITree is a way of "representing labels of data stored in a hierarchical tree-like structure". There is no similar data structure built-in to Java (or most languages). A graph library such as Guava's common.graph might work, depending on your use-case, otherwise you'll probably want to implement what you need yourself.