Provide a non-recursive version of depthFirstSearch().
What will be an ideal response?
```
// Perform a depth first search of a Graph g originating from Vertex v
Pseudocode: DFS ( Graph g, Vertex v )
Stack s // to store unvisited vertices
mark v as visited // don’t need to visit a vertex more than once!
push all vertices adjacent to v onto s
while s is not empty
let v be the vertex popped from s
visit v
for each Vertex w adjacent to v
if w has not been visited
push w onto s
```
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Answer the following statement true (T) or false (F)