random - Sample test files for directed weighted graphs -


i'm trying test graph shortest-path algorithms , evaluate execution time when graph gets bigger , more complex. inputs weighted directed graphs, source destination weight format bellow.

where can find database of such graph files? know base such files? i'm not sure randomly generating myself choice. 

    1 2 3     2 3 4     4 5 2     5 6 6     7 8 8     8 9 1     1 4 7     2 5 2     3 6 5     4 7 3     5 8 4     6 9 9     9 1 2


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