public override void Run()
{
var root = Q4_02_CreateMinimalBSTfromSortedUniqueArray.Create(1, 2, 3);
BTreePrinter.Print(root);
var results = AllSequences(root);
foreach (var list in results)
{
AssortedMethods.PrintList(list);
}
}
// I wrote the solution based on Topological sort in the Algorithms Book,
// and its code is here. https://github.com/kevin-wayne/algs4.
// In topological sort, you are using a directed graph.
// If a -> b, then it means, b depends on a,
// in other words, 'a' needs to be built before 'b.'
// After a topological sort, you expect all the nodes to be arranged such that it is flowing in one direction.
// Since a cycle is not allowed, the code checks if a cycle exists and returns.
// In real life, jobs cannot have circular dependencies.
public override void Run()
{
var diGraph = new DirectedGraph('f');
diGraph.AddEdge('a', 'd'); // d depends on a
diGraph.AddEdge('f', 'b'); // b depends on f
diGraph.AddEdge('b', 'd');
diGraph.AddEdge('f', 'a');
diGraph.AddEdge('d', 'c');
var topological = new Topological(diGraph);
var order = topological.Order();
AssortedMethods.PrintList(order);
}