Question: Modify the adjacency list representation for an undirected graph so that the first edge on the adjacency list for a vertex can be deleted in

Modify the adjacency list representation for an undirected graph so that the first edge on the adjacency list for a vertex can be deleted in constant time. Write and algorithm to delete the first edge at a vertex using your new representation. Hint: How do you arrange that the two cells representing edge (i,j) can be found quickly from one another?

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