36 lines
958 B
C#
36 lines
958 B
C#
<Query Kind="Program" />
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class Node { public char N; public List<Node> Precond = new List<Node>(); public List<Node> Postcond = new List<Node>(); }
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void Main()
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{
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var data = File
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.ReadAllLines(Path.Combine(Path.GetDirectoryName(Util.CurrentQueryPath), @"07_input.txt"))
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.Where(p => !string.IsNullOrWhiteSpace(p))
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.Select(l => (l[5], l[36]))
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.ToList();
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var nodes = data.SelectMany(p => new[] {p.Item1, p.Item2}).Distinct().Select(p => new Node {N=p}).ToList();
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foreach (var (pre, post) in data)
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{
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var n1 = nodes.First(p => p.N == pre);
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var n2 = nodes.First(p => p.N == post);
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n1.Postcond.Add(n2);
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n2.Precond.Add(n1);
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}
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var r = new StringBuilder();
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for(var fin = new HashSet<Node>(); fin.Count<nodes.Count;)
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{
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var n = nodes.Where(p => !fin.Contains(p)).Where(p => p.Precond.All(q => fin.Contains(q))).OrderBy(p=>p.N).First();
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fin.Add(n);
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r.Append(n.N);
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}
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r.ToString().Dump();
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}
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// Define other methods and classes here
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