On average, compiled languages consumed 120J to execute the solutions, while for virtual machine and interpreted languages this value was 576J and 2365J, respectively.
On the topic of mobile devices, I recall the Nokia N900, which ran mostly C and C++ software. Its UI performance was comparable to contemporary smartphones even though it only had 256 MB RAM and a single-core 600 MHz CPU. (Of course, a major part of today's phones' slow UI is all the bullshit and spying that apps are doing in the background.)
But would be nice to have some mobile apps written with C.
Since it's a single hybrid language, it's trivial to remove slower features fro, performance-intensive parts.
See my UIKonf talk https://www.youtube.com/watch?v=kHG_zw7%205SjE&feature=youtu...
Or my book: https://www.amazon.com/gp/product/0321842847/ref=as_li_tl?ie...