Here you can download Swift with libraries to run on Ubuntu 18.10. The latest available version on the Apple site is for Ubuntu 18.04. Based on the build from the official site with libraries from Ubuntu 18.04. +Example with PATH and LD_LIBRARY_PATH for the bash terminal:
http://www.mediafire.com/file/lrs74mvoj3fti03/swift4.2.3.ubuntu.18.10.x86_64.tar.gz/file
Swift 4.2.3 – Ubuntu 18.10
