copyFrom(Matrix source) added into interface and impl.
added TODOs into Experiment_ab_4_5 and tests for copyFrom
minor update on copyFrom test
almost finished Aufgabe 6
Aufgabe6 fin
changed insert of MatrixList; i had forgotten that it shouldnt save zero values, lol
also updated MatrixArrayList so that it saves NaN instead of zero. NaN is then interpreted as zero. tests for all impl. are still working
changed the core implementation. ArrayList really doesnt save any Nan/Null/Zero values. instead it stores the j-Index and the value in a wrapper class ArrayListElement
forgit to mention: i also added the memoryUsage() intoe the interface and in the impl.
halfway into Aufgabe 7
aufgabe 7 is just so much @%+#%63' -_-