the most obvious border case
First version of ex4 - problems with malloc
adding files
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Merge pull request #27 from rallenz/master

exercise 4 Ralf
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Master
corrected solution
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Master

added files of student 'spitz' in ex1, ex2, ex4

sry for being as late with this git-stuff..
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Master
running version with gray codes
new test instance
new test instance
new calculated solution
using gray codes
add data files
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update README
Update README.md
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organized test files