Combinatorica`
Combinatorica`
WeaklyConnectedComponents
As of Version 10, most of the functionality of the Combinatorica package is built into the Wolfram System. »
WeaklyConnectedComponents[g]
gives the weakly connected components of directed graph 
as lists of vertices.
Details and Options
- WeaklyConnectedComponents functionality is now available in the built-in Wolfram Language function WeaklyConnectedComponents.
- To use WeaklyConnectedComponents, you first need to load the Combinatorica Package using Needs["Combinatorica`"].
Examples
Wolfram Research (2012), WeaklyConnectedComponents, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/WeaklyConnectedComponents.html.
Text
Wolfram Research (2012), WeaklyConnectedComponents, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/WeaklyConnectedComponents.html.
CMS
Wolfram Language. 2012. "WeaklyConnectedComponents." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Combinatorica/ref/WeaklyConnectedComponents.html.
APA
Wolfram Language. (2012). WeaklyConnectedComponents. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Combinatorica/ref/WeaklyConnectedComponents.html