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  1. from collections import deque
  2.  
  3. graph = {
  4.     'A': ['B', 'C'],
  5.     'B': ['D', 'E'],
  6.     'C': ['F'],
  7.     'D': [],
  8.     'E': ['F'],
  9.     'F': []
  10. }
  11.  
  12. def bfs(graph, start):
  13.     visited = []
  14.     queue = deque([start])
  15.     while queue:
  16.         node = queue.popleft()
  17.         if node not in visited:
  18.             visited.append(node)
  19.             queue.extend(graph[node])
  20.     return visited
  21.  
  22. def dfs(graph, start):
  23.     visited = []
  24.     stack = [start]
  25.     while stack:
  26.         node = stack.pop()
  27.         if node not in visited:
  28.             visited.append(node)
  29.             stack.extend(reversed(graph[node]))
  30.     return visited
  31.  
  32. bfs_result = bfs(graph, 'A')
  33. dfs_result = dfs(graph, 'A')
  34.  
  35. print("BFS:", bfs_result)
  36. print("DFS:", dfs_result)
  37.  
Success #stdin #stdout 0.02s 7552KB
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Standard input is empty
stdout
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('BFS:', ['A', 'B', 'C', 'D', 'E', 'F'])
('DFS:', ['A', 'B', 'D', 'E', 'F', 'C'])
https://ideone.com/x3VI9k
language:
Python (cpython 2.7.16)
created:
2 days ago
visibility:
public

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