I've got your point. Just for the sake of nitpicking: both your actual examples have been solved by compilers automatically. SIMD/AVX: https://code.jsoftware.

I've got your point. Just for the sake of nitpicking: both your actual examples have been solved by compilers automatically. SIMD/AVX: https://code.jsoftware.com/wiki/Guides/AVX https://code.jsoftware.com/wiki/Guides/AVX JVM generates vectorized string instructions from your simple for cycles - if availabe: http://jcdav.is/2016/09/01/How-the-JVM-compares-your-strings/ http://jcdav.is/2016/09/01/How-the-JVM-compares-your-strings... edit: my second example link is maybe wrong, but anyway, auto-vectorization is a real thing...