In Exercises 16–18 draw an undirected graph represented by
the given adjacency matrix.
16. ⎡
⎣
132
304
240
⎤
⎦
17. ⎡
⎢
⎢
⎣
1201
2030
0311
1010
⎤
⎥
⎥
⎦
18. ⎡
⎢
⎢
⎢
⎢
⎣
01304
12130
31101
03002
40123
⎤
⎥
⎥
⎥
⎥
⎦