Created
November 15, 2020 03:23
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Trie<T>
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public class Trie<T> : Dictionary<T, Trie<T>> | |
{ | |
public KeyValuePair<T, Trie<T>> Parent; | |
public bool ContainsParts(IEnumerable<T> parts, out int index) | |
{ | |
index = 0; | |
Trie<T> t = this, n = null; | |
foreach (var p in parts) | |
{ | |
if (!t.TryGetValue(p, out n)) return false; | |
t = n; | |
index++; | |
} | |
return true; | |
} | |
public Trie<T> AddParts(IEnumerable<T> parts) | |
{ | |
Trie<T> t = this, n = null; | |
foreach (var p in parts) | |
{ | |
if (!t.TryGetValue(p, out n)) | |
{ | |
n = new Trie<T>() { Parent = new KeyValuePair<T, Trie<T>>(p, t) }; | |
t.Add(p, n); | |
} | |
t = n; | |
} | |
return t; | |
} | |
public IEnumerable<T> Parts() | |
{ | |
var t = this; | |
while (t.Parent.Value != null) | |
{ | |
yield return t.Parent.Key; | |
t = t.Parent.Value; | |
} | |
} | |
public IEnumerable<Trie<T>> Traverse() | |
{ | |
foreach (var n in this) | |
{ | |
yield return n.Value; | |
foreach (var c in n.Value.Traverse()) | |
yield return c; | |
} | |
} | |
} |
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