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Function dijkstra(Graph, source, destination)

Q = vertex set

	for each vertex v in Graph
		distance to v = infinity
		add v to Q
		previous_vertex = undefined (previous vertex in optimal path from source)
	distance to source = 0

	while Q not empty
		best_neighbour = vertex in Q with minimum distance from s
		remove best_neighbour from Q
		for each neighbour v of best_neighbour
			potential_path = distance to best_neighbour + edge(best_neighbour, v)
			if potential_path < distance to v
				distance to v = potential_path
				previous_vertex = best_neighbour
	return
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