Fix small typos
Remove unnecessary hyphens in part 2
Tweaks to section 12
7 and 8 translated, not revised
All week 3 translated and revised
Merge pull request #17 from mateor/master1

Error in index calculation (section 16.1)
merge
Merge pull request #15 from poiru/patch-2

Tweaks and fixes
Merge branch 'master' of https://github.com/UniversityHelsinkiTKTL/MOOC-material into master1
Make clear that ArrayList can be permanently modified

Since the express point of this code block is to show that modifications done in separate methods are
reflected in main, I think that it should be more clear than simply the one closing bracket after the
removeFirst method.
Grammer fixes
FIx mis-named variable

I don't know anything about the conversion you are doing, but the formula comes out if divided by hundred.
Divided by zero certainly wasn't properly descriptive.
Untranslated finnish
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Untranslated Finnish (henkilo -> person)
grammer fix.
untranslated
spelling error
Format code comments- ran right off page!
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