The Java Hash functions and possibly other functions, need to be more centralized, e.g., in DS-java-common.

This should actually be a discussion, but some functions, like our MurmurHash3 implementations are not necessarily available elsewhere in the form that we like, but are used by more than one Java repository. This could apply to some of our specialized math functions as well. Perhaps they should be in a common repo like the DS-java-common.

首先比较各个 Java 仓库中使用的 MurmurHash3 实现和专用数学函数，然后查看 DS-java-common 已经提供了哪些内容。当就需要集中化的函数、其目标仓库以及共享 API 的范围达成一致后，该 issue 即完成。

由索引模型根据 Issue 内容生成。