Graph BFS/DFS Problems

BFS:

http://www.programcreek.com/2012/12/leetcode-clone-graph-java/

http://www.programcreek.com/2014/05/leetcode-course-schedule-java/

http://www.geeksforgeeks.org/minimum-time-required-so-that-all-oranges-become-rotten/
http://www.geeksforgeeks.org/length-of-shortest-chain-to-reach-a-target-word/

http://www.geeksforgeeks.org/find-if-there-is-a-path-between-two-vertices-in-a-given-graph/

http://www.geeksforgeeks.org/bipartite-graph/

DFS:

http://www.geeksforgeeks.org/find-number-of-islands/