$ sudo apt-get update
$ sudo apt-get install libnlopt0 

libnlopt0 is installed in your system.

Make ensure the libnlopt0 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libnlopt0 *

You will get with libnlopt0 package name, version, architecture and description in a table

libnlopt0 package basic information: