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in Computer by (68.9k points)

In an adjacency list representation of an undirected simple graph G = (V, E ), each edge (u, v) has two adjacency list entries: [v] in the adjacency list of u, and [u] in the adjacency list of v. These are called twins of each other. A twin pointer is a pointer from an adjacency list entry to its twin. If |E | = m and |V | = n, and the memory size is not a constraint, what is the time complexity of the most efficient algorithm to set the twin pointer in each entry in each adjacency list? 

(A) Θ (n2)

(B) Θ + (n m) 

(C) Θ(m2

(D) Θ(n4)

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1 Answer

+1 vote
by (67.7k points)

Correct option is (B) Θ + (n m)

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