```
DFS-iterative (G, s): //Where G is graph and s is source vertex
let S be stack
S.push( s ) //Inserting s in stack
mark s as visited.
while ( S is not empty):
//Pop a vertex from stack to visit next
v = S.top( )
S.pop( )
//Push all the neighbours of v in stack that are not visited
for all neighbours w of v in Graph G:
if w is not visited :
S.push( w )
mark w as visited
DFS-recursive(G, s):
mark s as visited
for all neighbours w of s in Graph G:
if w is not visited:
DFS-recursive(G, w)
```

## Friday, February 17, 2017

### Basics of Depth First Search(DFS) Algorithm

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