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I have run this exercise with multiple C++ developers from junior to senior. Its a simple task that can reveal strength/weakness in a devs understanding of what good C++ could look like.
Implement a reverse words function that works in-place on the string provided.
- Make it correct
- Make it performant
- Make it maintainable
Give it a go. I'll also post content warning hint(s) as replies.
godbolt.orgCompiler Explorer - C++ (x86-64 clang 17.0.1)
void reverse_words(std::string &) noexcept
{
// Implement here
}
int main()
{
using namespace std::string_literals;
auto str = "Can you reverse these words?"s;
reverse_words(str);
assert(str == "words? these reverse you Can");
}
@glloyd This is a rotate and I claim my five pounds!
@jezhiggins @glloyd
Funny, but with the space, that's just more complicated. Also, the rotate is O(n*m) performance, not O(n)