Route inspection urg...
1. List the order of each of the vertices (how many edges are going out of it)
2. Highlight/List all the odd vertices - there will be an even number of odd vertices!
3. Form all possible pairs of odd vertices e.g. odd vertices = A,B,C,D so the pairs could be: AB CD or AC BD or AD BC
4. Now you need to find the value for going along each of the pairs of vertices. Sometimes you may have to go via another vertex if AB doesn't have a direct route; go AEB then add the weight of AE and EB together! Use the graph to help you and list all repeated arcs.
5. Do this for all the pairs of odd vertices and see which combination has the lowest value e.g AB CD = 110, AC BD = 230 and AD BC = 175. So AB CD has the lowest value.
6. You can now draw on the acrs you will go along twice or repeat!
7. You can now write down the order/route starting and ending at the same vertex - List it as a string of letters, making sure ever edge in covered and going down the repeated egdes.
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