Bug in dfs.py

[gaurav-patel-git]

In line 19 of dfs.py we should add another condition that cur vertex should not be present in stack.
In case of K3 graph the output of your programme is [0, 2, 1, 1].

[alaouiib]

before appending current to the visitedVertex, add this condition

if current not in stack:
     visitedVertex.append(current)