for each vertex v in Graph: dist[v] := infinity previous[v] := undefined dist[source] := 0 Q := the set of all nodes in Graph while Q is not empty: u := node in Q with smallest dist[] remove u from Q for each neighbor v of u: alt := dist[u] + dist_between(u, v) if alt < dist[v] dist[v] := alt previous[v] := u return previous[]

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