I) Open link https://github.com/kevin-wayne/algs4 and download algs4-master zip.

Untitled

II) Open link https://algs4.cs.princeton.edu/code/ and download algs4.jar

algs3.JPG

III)Open link https://algs4.cs.princeton.edu/code/ and download algs4-data.zip

algs1.JPG

IV)Windows 8 or 10: Control Panel → System and Security → System → Advanced system settings → Advanced → Environment Variables → CLASSPATH

algs2.JPG

V)Setting IDEA

1)unzip algs4-master.zip