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python depth first search

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Experimental Hypothesis answered on January 6, 2021 Popularity 10/10 Helpfulness 2/10

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python depth first search

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# left to right, pre-order depth first tree search, recursive. O(n) time/space
def depthFirstSearchRec(root):
    if root == None: return
    print(root)
    depthFirstSearch(root.left)
    depthFirstSearch(root.right)

Popularity 10/10 Helpfulness 2/10 Language python

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Tags: depth-first-search python

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Contributed on Jan 06 2021

Experimental Hypothesis

0 Answers Avg Quality 2/10

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python depth first search

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# left to right, pre-order depth first tree search, iterative. O(n) time/space
def depthFirstSearch(root):
    st = [root]
    while st:
        current = st.pop()
        print(current)
        if current.right: st.append(current.right) 
        if current.left: st.append(current.left)

Popularity 10/10 Helpfulness 5/10 Language python

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Tags: depth-first-search depth-first-searc

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Contributed on Jan 06 2021

Experimental Hypothesis

0 Answers Avg Quality 2/10

Python depth first search

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from collections import defaultdict

class Graph:
    def __init__(self):
        self.graph = defaultdict(list)
    
    def addEdge(self, u, v):
        self.graph[u].append(v)
        print("This is u" , u)
        
    def DFSUtil(self, v, visited):
        visited.add(v)
        print(v, end=" ")

        for neighbor in self.graph[v]:
            if neighbor not in visited:
                self.DFSUtil(neighbor, visited)
    
    def DFS(self, v):
        visited = set()
        self.DFSUtil(v, visited)

if __name__ == "__main__":
    g = Graph()
    g.addEdge(0, 1)
    g.addEdge(0, 2)
    g.addEdge(1, 2)
    g.addEdge(2, 0)
    g.addEdge(2, 3)
    g.addEdge(3, 3)

    print("It's done")
    g.DFS(2)

Popularity 8/10 Helpfulness 2/10 Language python

Source: Grepper

Tags: depth-first-search depth-first-searc

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Contributed on Oct 04 2022

Adam, the developer

0 Answers Avg Quality 2/10

python depth first search

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