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Update g_topological_sort.py (#1873)

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Sanders Lin 2020-04-16 18:34:14 +08:00 committed by GitHub
parent f6ee518ee1
commit d2e8e6215e
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1 changed files with 8 additions and 8 deletions
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graphs/g_topological_sort.py
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@ -9,7 +9,7 @@ clothes = {
5: "socks",
6: "shirt",
7: "tie",
8: "clock",
8: "watch",
}
graph = [[1, 4], [2, 4], [3], [], [], [4], [2, 7], [3], []]
@ -21,27 +21,27 @@ stack = []
def print_stack(stack, clothes):
order = 1
while stack:
cur_clothe = stack.pop()
print(order, clothes[cur_clothe])
current_clothing = stack.pop()
print(order, clothes[current_clothing])
order += 1
def dfs(u, visited, graph):
def depth_first_search(u, visited, graph):
visited[u] = 1
for v in graph[u]:
if not visited[v]:
dfs(v, visited, graph)
depth_first_search(v, visited, graph)
stack.append(u)
def top_sort(graph, visited):
def topological_sort(graph, visited):
for v in range(len(graph)):
if not visited[v]:
dfs(v, visited, graph)
depth_first_search(v, visited, graph)
if __name__ == "__main__":
top_sort(graph, visited)
topological_sort(graph, visited)
print(stack)
print_stack(stack, clothes)