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>>man , thats ridiculously easy<<

it is pretty easy but you have a time limit of 20 minutes and it is written by hand; then you have to code it and try to compile it - you're allowed 3 minor bugs...

I have, but never over the phone; my first interview was some typical questions about my coding background, and finally analyzation of a C function - and what it prints out. Actually, there was a bug...