EDIT: Since a number of people asked, the ad was "Database startup looking for C++ programmers". Btw., our pre-screening per-email test is to write the in-plac

EDIT: Since a number of people asked, the ad was "Database startup looking for C++ programmers". Btw., our pre-screening per-email test is to write the in-place remove_char() function which was posted here on HN a couple of months ago [10 LOC], and to write an instrusive stack [50 LOC]. People usually get them wrong but get it right the second time, when I explain what the point is.