marrow/package/tarjan.py
def robust_topological_sort(graph: Graph) -> list:
	"""Identify strongly connected components then perform a topological sort of those components."""
	
	assert check_argument_types()
	
	components = strongly_connected_components(graph)
	
	node_component = {}
	for component in components:
		for node in component:
			node_component[node] = component
	
	component_graph = {}
	for component in components:
		component_graph[component] = []
	
	for node in graph:
		node_c = node_component[node]
		for successor in graph[node]:
			successor_c = node_component[successor]
			if node_c != successor_c:
				component_graph[node_c].append(successor_c) 
	
	return topological_sort(component_graph)
def robust_topological_sort(graph: Graph) -> list:
	assert check_argument_types()
	
	components = strongly_connected_components(graph)
	
	node_component = {}
	for component in components:
		for node in component:
			node_component[node] = component
	
	component_graph = {}
	for component in components:
		component_graph[component] = []
	
	for node in graph:
		node_c = node_component[node]
		for successor in graph[node]:
			successor_c = node_component[successor]
			if node_c != successor_c:
				component_graph[node_c].append(successor_c) 
	
	return topological_sort(component_graph)
def robust_topological_sort ( graph : Graph ) -> list : assert check_argument_types ( ) components = strongly_connected_components ( graph ) node_component = { } for component in components : for node in component : node_component [ node ] = component component_graph = { } for component in components : component_graph [ component ] = [ ] for node in graph : node_c = node_component [ node ] for successor in graph [ node ] : successor_c = node_component [ successor ] if node_c != successor_c : component_graph [ node_c ] . append ( successor_c ) return topological_sort ( component_graph )
Identify strongly connected components then perform a topological sort of those components.
Identify strongly connected components then perform a topological sort of those components .