i intend to use it for general text layout with TrueType/FreeType

This is like 500000 chars/s/core. Although in the case of plain text minimal layout unit is paragraph, it is very hard to provide information required to interact with text (e.g. scrollbar information) without text being measured entirely.

yea

легко ли придумать атаку на такой хэш? https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/hash_bytes.cc#L74-L112

/me чуть проскроллил выше и увидел название

Aragaer чуть проскроллил выше и увидел название

https://en.wikipedia.org/wiki/MurmurHash - тут про уязвимости написано

Hash functions can be vulnerable to attack if a user can choose input data in such as way to intentionally cause hash collisions. Jean-Philippe Aumasson and Daniel J. Bernstein were able to show that even implementations of MurmurHash using a randomized seed are vulnerable to so-called HashDoS attacks.[47] With the use of differential cryptanalysis they were able to generate inputs that would lead to a hash collision. The authors of the attack recommend to use their own SipHash instead.

how do i correctly obtain the pixel data length of SkBitmap.getPixels so i can copy it into a jintArray

This is not about algorithms, this is offtopic

Что они тут несут то вообще?

Dan

))

а подобрать целые?

и ненулевыми должны быть все или только хотя бы одно?

тогда чуть более наркомански, потому что для двух чисел (a, b) ответ (-b, a)

минимизировать что-либо требуется?

а, четное :)

a1 a2 a3 a4 a5 a6
ответ
-a2 a1 -a4 a3 -a6 a5

Нормально