Eulerian and Hamiltonian cycles.Consider the graphs defined by the following four sets of edges:
0-1 0-2 0-3 1-3 1-4 2-5 2-9 3-6 4-7 4-8 5-8 5-9 6-7 6-9 7-8
0-1 0-2 0-3 1-3 0-3 2-5 5-6 3-6 4-7 4-8 5-8 5-9 6-7 6-98-8
0-1 1-2 1-3 0-3 0-4 2-5 2-9 3-6 4-7 4-8 5-8 5-9 6-7 6-9 7-8
4-1 7-9 6-2 7-3 5-0 0-2 0-8 1-6 3-9 6-3 2-8 1-5 9-8 4-5 4-7
Which of these graphs have Eulerian cycles (cycles that visit each edge exactly once)? Which of them have Hamiltonian cycles (cycles that visit each vertex exactly once)? Develop a linear-time DFS-based algorithm to determine whether a graph has an Eulerian cycle (and if so find one).
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