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This commit is contained in:
Joelkurien 2024-10-28 14:02:29 +11:00
parent debba8c7dd
commit bcf5beda92
1 changed files with 16 additions and 5 deletions
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19
graphs/johnson_graph.py
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@ -60,7 +60,8 @@ class JohnsonGraph:
for vertex_a in self.graph: for vertex_a in self.graph:
for vertex_a, vertex_b, weight in self.edges: for vertex_a, vertex_b, weight in self.edges:
if distances[vertex_a] != sys.maxsize - 1 and distances[vertex_a] + weight < distances[vertex_b]: if (distances[vertex_a] != sys.maxsize - 1 and
distances[vertex_a] + weight < distances[vertex_b]):
distances[vertex_b] = distances[vertex_a] + weight distances[vertex_b] = distances[vertex_a] + weight
return distances return distances
@ -82,13 +83,23 @@ class JohnsonGraph:
for i in range(len(self.edges)): for i in range(len(self.edges)):
vertex_a, vertex_b, weight = self.edges[i] vertex_a, vertex_b, weight = self.edges[i]
self.edges[i] = (vertex_a, vertex_b, weight + hash_path[vertex_a] - hash_path[vertex_b]) self.edges[i] = (vertex_a,
vertex_b,
weight + hash_path[vertex_a] - hash_path[vertex_b])
self.graph.pop("#") self.graph.pop("#")
self.edges = [(vertex1, vertex2, node_weight) for vertex1, vertex2, node_weight in self.edges if vertex1 != "#"] filtered_edges = []
for vertex1, vertex2, node_weight in self.edges:
if vertex1 != "#":
filtered_edges.append((vertex1, vertex2, node_weight))
self.edges = filtered_edges
for vertex in self.graph: for vertex in self.graph:
self.graph[vertex] = [(vertex2, node_weight) for vertex1, vertex2, node_weight in self.edges if vertex1 == vertex] filtered_neighbors = []
for vertex1, vertex2, node_weight in self.edges:
if vertex1 == vertex:
filtered_neighbors.append((vertex2, node_weight))
self.graph[vertex] = filtered_neighbors
distances = [] distances = []
for vertex1 in self.graph: for vertex1 in self.graph: