For those who have done Quiz Two: Did anyone find issues with the solution for question 4? The answer makes no sense. Also if anyone has time, it would be nice to to know what people chose for items 1 and 2 in question 7 and why... THANKS!

Question

anonymous · Answer

which course, 2008 or 2011?

anonymous · Answer

I don't know about SaZam, but I could use an explanation on 2011

anonymous · Answer

2011

anonymous · Answer

2011

anonymous · Answer

hmm the solution for 4 looks bogus to me.

anonymous · Answer

The provided solution looks like the victim of cut and paste. The actual answer is:

Rectangle with area 6.0
Rectangle with area 6.0
Circle with diameter 2.0

I've shot a note to the OCW folks to fix it.

To answer question 7. Item 1 would be "f) specification." and Item 2 would be "b) divide and conquer."

Item 1 is specification because one intent behind data abstraction is that you don't know the internals of the data structure you're manipulating. The functional specification is all you need to know to use that data structure. Item 2 is divide and conquer because of the way merge sort operates: It divides a list in half, sorts those two halfs, and merges them. It does this recursively for each side of the list until it's only merging less than 2 items. Thus, it solves the problem by dividing it into two smaller problems to solve. Hence, divide and conquer. 

- Mitch