Lecture 17 CSE 331 Oct 10, 2012.

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Presentation transcript:

Lecture 17 CSE 331 Oct 10, 2012

Mid term bog post up

Online OH No. 5 @9:30pm tonite

On Thursday, Oct 18 hours-a-thon Unclaimed HWs and solutions Zihe: 3:00-5:00 (Davis 302) Jiun-Jie: 5:00-6:00 (Davis 302)

Review Session on Oct 19 Zihe’s recitation section from 9-9:50am in 114 Hoch

Directed graphs Adjacency matrix is not symmetric Each vertex has two lists in Adj. list rep.

Directed Acyclic Graph (DAG) No directed cycles Precedence relationships are consistent

Topological Sorting of a DAG Order the vertices so that all edges go “forward” Topological sorting  DAG

Today’s agenda DAG  topological sorting

Run of TopOrd algorithm