pathGraph -- A method that makes a path graph

• Usage:

  P = pathGraph n

• Inputs:
  • n, an integer,
• Outputs:
  • P, a graph, the path grah of n vertices

i1 : pathGraph 5

o1 = Graph{0 => {1}   }
           1 => {0, 2}
           2 => {1, 3}
           3 => {2, 4}
           4 => {3}

o1 : Graph