Checks if a directed graph is a Direct Acyclic Graph (DAG) and returns the topological order.
GetAndCheckTopologicalSort(arcSources, arcTargets, numNodes)
A named list containing 1) "is_DAG": a logical
stating if the
graph is a DAG, and 2) "indices": a vector of length numNodes
,
containing the index of vertex i in the ordering at location i
Vector corresponding to the source nodes of a graph's edges
Vector corresponding to the destination nodes of a graph's edges
The number of nodes in the graph
See https://lemon.cs.elte.hu/pub/doc/1.3.1/a00616.html#gaf10c5e1630e5720c20d83cfb77dbf024 for more information.