DFS - 인접 리스트

#DFS - 인접 리스트
def dfs(graph, v,vi,r):
  #global r
  r.append(v)
  for i in range(len(graph[v])):
    if(vi[graph[v][i]]==False):
      vi[graph[v][i]]=True
      dfs(graph,graph[v][i],vi,r)

r=[]
graph = [
  [],
  [2,3,8],
  [1,7],
  [1,4,5],
  [3,5],
  [3,4],
  [7],
  [2,6,8],
  [1,7]
]

vi=[False]*9
vi[1]=True
dfs(graph, 1,vi,r)
#print(1, end=" ")
print(r)