Dfs and bfs in python

def bfs(graph, start):
    visited, queue = set(), [start]
    while queue:
        vertex = queue.pop(0)
        if vertex not in visited:
            visited.add(vertex)
            queue.extend(graph[vertex] - visited)
    return visited

bfs(graph, 'A') # {'B', 'C', 'A', 'F', 'D', 'E'}

Source: eddmann.com

Dfs and bfs inn python

def dfs(graph, start):
    visited, stack = set(), [start]
    while stack:
        vertex = stack.pop()
        if vertex not in visited:
            visited.add(vertex)
            stack.extend(graph[vertex] - visited)
    return visited

dfs(graph, 'A') # {'E', 'D', 'F', 'A', 'C', 'B'}

Source: eddmann.com

Dfs and bfs in python

def shortest_path(graph, start, goal):
    try:
        return next(bfs_paths(graph, start, goal))
    except StopIteration:
        return None

shortest_path(graph, 'A', 'F') # ['A', 'C', 'F']

Source: eddmann.com

Dfs and bfs in python

def dfs_paths(graph, start, goal, path=None):
    if path is None:
        path = [start]
    if start == goal:
        yield path
    for next in graph[start] - set(path):
        yield from dfs_paths(graph, next, goal, path + [next])

list(dfs_paths(graph, 'C', 'F')) # [['C', 'F'], ['C', 'A', 'B', 'E', 'F']]

Source: eddmann.com

Similar codes

4 votes272 views7 answers
Int
Python
1 vote284 views1 answer
Extract first letter of column python
Python
0 vote297 views1 answer
"detail": "Method \"POST\" not allowed." django
Python Django
15 votes256 views3 answers
How to get the current year in python
Python
10 votes268 views1 answer
Registering static files in jango
Python
0 vote245 views1 answer
Initiate dask
Python
1 vote269 views1 answer
Python stock prediction code
Python
0 vote266 views1 answer
How to create enter pressed for qlineedit in pyqt5
Python
1 vote272 views1 answer
How to change number of steps in tensorflow object detection api
Python
2 votes319 views3 answers
Python download for ubuntu 20.04
Python