Arrays & ArrayLists Multiple Choice

How did you do on the multiple choice questions?

I got most of them, generally better than all of the Recursion problems.

Did you understand your errors?

Most of them, but I'm almost sure the book has some errors. I will ask them in class. 

What do you not understand?

Nothing much. I understood the material.

Can you envisage 2D arrays as arrays of arrays?

 Yes, it is like an array where each index of the array contains an array of objects. Although that doesn't necessarily make sense in the notation, because in that sense, if I wanted to access the collumn 1 row 1 object I would notate it as:

arr[1 [1]];

instead of the real notation:

arr[1] [1];

I guess this is purely syntax, but it goes around my logic a bit.