void f1()- Perform breadth-first traversal (to the file f1.txt) from the vertex i=3 (the vertex D) but display 5 vertices from the 4th vertex to the 8th vertex only. Hint: copy breadth(...) to breadth2(...)and modify the latter one. Content of the output file f1.txt must be:
DAGBCEHIF
BCEHI
void f2() - Apply the Dijkstra's shortest path algorithm to find (1) the shortest path from vertext 1 (B) to vertex 5 (F), then (2) from vertex 0 (A) to vertex 6 (G). Write 3 lines to the file f2.txt: line 1 contains vertices in shortest path (1), line 2 contains the last 3 vertices selected into the set S in (2), line 3 contains vertices with their labels in shortest path (2). (Note that in the weighted matrix, the value 99 is considered as infinity). Output in the file f2.txt must be the following:
BCEDF
DFG
A|0 B 10 C12 E15 D19 G|29
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