1 | #Region "Microsoft.VisualBasic::ad3f839f9168701625cdb64b9795197f, Microsoft.VisualBasic.Core\ComponentModel\Algorithm\BinaryTree\Enumerable.vb" |
2 | |
3 | ' Author: |
4 | ' |
5 | ' asuka (amethyst.asuka@gcmodeller.org) |
6 | ' xie (genetics@smrucc.org) |
7 | ' xieguigang (xie.guigang@live.com) |
8 | ' |
9 | ' Copyright (c) 2018 GPL3 Licensed |
10 | ' |
11 | ' |
12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
13 | ' |
14 | ' |
15 | ' This program is free software: you can redistribute it and/or modify |
16 | ' it under the terms of the GNU General Public License as published by |
17 | ' the Free Software Foundation, either version 3 of the License, or |
18 | ' (at your option) any later version. |
19 | ' |
20 | ' This program is distributed in the hope that it will be useful, |
21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | ' GNU General Public License for more details. |
24 | ' |
25 | ' You should have received a copy of the GNU General Public License |
26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
27 | |
28 | |
29 | |
30 | ' /********************************************************************************/ |
31 | |
32 | ' Summaries: |
33 | |
34 | ' Module Enumerable |
35 | ' |
36 | ' Function: ClusterMembers, PopulateNodes, PopulateSequence, (+2 Overloads) Values |
37 | ' |
38 | ' |
39 | ' /********************************************************************************/ |
40 | |
41 | #End Region |
42 | |
43 | Imports System.Runtime.CompilerServices |
44 | |
45 | Namespace ComponentModel.Algorithm.BinaryTree |
46 | |
47 | Public Module Enumerable |
48 | |
49 | ''' <summary> |
50 | ''' Populate an ASC sortted sequence from this binary tree |
51 | ''' |
52 | ''' ``` |
53 | ''' left -> me -> right |
54 | ''' ``` |
55 | ''' </summary> |
56 | ''' <typeparam name="K"></typeparam> |
57 | ''' <typeparam name="V"></typeparam> |
58 | ''' <param name="tree"></param> |
59 | ''' <returns></returns> |
60 | ''' <remarks> |
61 | ''' 这个函数是直接将键名和对应的值取出来,如果是需要取出聚类的簇成员, |
62 | ''' 应该使用<see cref="PopulateNodes(Of K, V)"/>方法 |
63 | ''' </remarks> |
64 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
65 | <Extension> |
66 | Public Function PopulateSequence(Of K, V)(tree As BinaryTree(Of K, V)) As IEnumerable(Of Map(Of K, V)) |
67 | Return tree.PopulateNodes.Select(Function(n) New Map(Of K, V)(n.Key, n.Value)) |
68 | End Function |
69 | |
70 | ''' <summary> |
71 | ''' 将一个给定的二叉树对象转换为一个数组序列 |
72 | ''' </summary> |
73 | ''' <typeparam name="K"></typeparam> |
74 | ''' <typeparam name="V"></typeparam> |
75 | ''' <param name="tree"></param> |
76 | ''' <returns></returns> |
77 | <Extension> |
78 | Public Iterator Function PopulateNodes(Of K, V)(tree As BinaryTree(Of K, V)) As IEnumerable(Of BinaryTree(Of K, V)) |
79 | If Not tree.Left Is Nothing Then |
80 | For Each node In tree.Left.PopulateNodes |
81 | Yield node |
82 | Next |
83 | End If |
84 | |
85 | Yield tree |
86 | |
87 | If Not tree.Right Is Nothing Then |
88 | For Each node In tree.Right.PopulateNodes |
89 | Yield node |
90 | Next |
91 | End If |
92 | End Function |
93 | |
94 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
95 | <Extension> |
96 | Public Function Values(Of K, V)(tree As BinaryTree(Of K, V)) As IEnumerable(Of V) |
97 | Return tree.PopulateNodes.Values |
98 | End Function |
99 | |
100 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
101 | <Extension> |
102 | Public Function Values(Of K, V)(nodes As IEnumerable(Of BinaryTree(Of K, V))) As IEnumerable(Of V) |
103 | Return nodes.Select(Function(n) n.Value) |
104 | End Function |
105 | |
106 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
107 | <Extension> |
108 | Public Function ClusterMembers(Of K, V)(node As BinaryTree(Of K, V)) As V() |
109 | If node Is Nothing Then |
110 | Return {} |
111 | Else |
112 | Return DirectCast(node!values, List(Of V)).ToArray |
113 | End If |
114 | End Function |
115 | End Module |
116 | End Namespace |