Challenge 9: Remove Edge

Problem statement

You must implement the removeEdge function, which takes a source and a destination as arguments. If an edge exists between the two, it should be deleted.

Input

The input is a graph, a source (integer), and a destination (integer).

Output

A graph with the edge between the source and the destination is removed.

Sample input

Vertex	Edges
0	1, 2
1	3
2	3, 4
3	None
4	0

Sample output

removeEdge(graph, 2, 3)

Vertex	Edges
0	1, 2
1	3
2	4
3	None
4	0