Python数据结构之图的应用示例

2020-01-04 15:07:07

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本文实例讲述了Python数据结构之图的应用。分享给大家供大家参考，具体如下：

一、图的结构

Python,数据结构,图

二、代码

# -*- coding:utf-8 -*-#! python3def searchGraph(graph,start,end):  results =[]  generatePath(graph,[start],end,results)  results.sort(key =lambda x:len(x))  return resultsdef generatePath(graph,path,end,results):  state = path[-1]  if state == end:    results.append(path)  else:    for arc in graph[state]:      if arc not in path:        generatePath(graph,path +[arc],end ,results)if __name__ =='__main__':  Graph={'A':['B','C','D'],  'B':['E'],  'C':['D','F'],  'D':['B','E','G'],  'E':[],  'F':['D','G'],  'G':['E']}  r = searchGraph(Graph,'A','E')  print("******************")  print(' path A to E')  print("******************")  for i in r:    print(i)

三、运行结果

******************
path A to E
******************
['A', 'B', 'E']
['A', 'D', 'E']
['A', 'C', 'D', 'E']
['A', 'D', 'B', 'E']
['A', 'D', 'G', 'E']
['A', 'C', 'D', 'B', 'E']
['A', 'C', 'D', 'G', 'E']
['A', 'C', 'F', 'D', 'E']
['A', 'C', 'F', 'G', 'E']
['A', 'C', 'F', 'D', 'B', 'E']
['A', 'C', 'F', 'D', 'G', 'E']

运行效果图如下：

Python,数据结构,图