Solution: Count the Number of Edges in an Undirected Graph
Let’s solve the Count the Number of Edges in an Undirected Graph problem.
We'll cover the following
Statement
Given an n
number of nodes in an undirected graph, compute the total number of bidirectional edges.
Constraints:
n
edges.length
edges[i].length
n
There are no multiple edges between any two vertices
There are no self-loops
Solution
This approach iterates over each vertex
in the graph
and calculates the sum
of the lengths of adjacency
lists corresponding to each vertex
. The idea is to count the number of connections or edges in the graph
. Dividing the final sum
by graph
. This method effectively traverses the adjacency
list representation of the graph to determine the total number of edges.
Let’s look at the illustration below to better understand the solution:
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