Create and plot a directed graph, and then compute the out-degree of every node in the graph. The out-degree of a node is equal to the number of edges with that node as the source.
s = [1 3 2 2 4 5 1 2];
t = [2 2 4 5 6 6 6 6];
G = digraph(s,t);
plot(G)
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