| 1 | #Region "Microsoft.VisualBasic::9dbc70c8a7df8057d1d1449a5c94baf7, Microsoft.VisualBasic.Core\ComponentModel\System.Collections.Generic\PriorityQueue\PriorityQueue.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 | ' Class PriorityQueue |
| 35 | ' |
| 36 | ' Properties: Count |
| 37 | ' |
| 38 | ' Constructor: (+2 Overloads) Sub New |
| 39 | ' |
| 40 | ' Function: Contains, Dequeue, GetEnumerator, IEnumerable_GetEnumerator, Peek |
| 41 | ' ToString |
| 42 | ' |
| 43 | ' Sub: Add, Clear, Enqueue, Remove, Sort |
| 44 | ' |
| 45 | ' |
| 46 | ' /********************************************************************************/ |
| 47 | |
| 48 | #End Region |
| 49 | |
| 50 | '! |
| 51 | '@file PriorityQueue.cs |
| 52 | '@author Woong Gyu La a.k.a Chris. <juhgiyo@gmail.com> |
| 53 | ' <http://github.com/juhgiyo/epForceDirectedGraph.cs> |
| 54 | '@date September 27, 2013 |
| 55 | '@brief PriorityQueue Interface |
| 56 | '@version 2.0 |
| 57 | ' '@section LICENSE |
| 58 | ' 'The MIT License (MIT) |
| 59 | ' 'Copyright (c) 2013 Woong Gyu La <juhgiyo@gmail.com> |
| 60 | ' 'Permission is hereby granted, free of charge, to any person obtaining a copy |
| 61 | 'of this software and associated documentation files (the "Software"), to deal |
| 62 | 'in the Software without restriction, including without limitation the rights |
| 63 | 'to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 64 | 'copies of the Software, and to permit persons to whom the Software is |
| 65 | 'furnished to do so, subject to the following conditions: |
| 66 | ' 'The above copyright notice and this permission notice shall be included in |
| 67 | 'all copies or substantial portions of the Software. |
| 68 | ' 'THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 69 | 'IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 70 | 'FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 71 | 'AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 72 | 'LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 73 | 'OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 74 | 'THE SOFTWARE. |
| 75 | ' '@section DESCRIPTION |
| 76 | ' 'An Interface for the PriorityQueue Class. |
| 77 | ' ' |
| 78 | |
| 79 | Imports System.Runtime.CompilerServices |
| 80 | Imports Microsoft.VisualBasic.Serialization.JSON |
| 81 | |
| 82 | Namespace ComponentModel.Collection |
| 83 | |
| 84 | ''' <summary> |
| 85 | ''' An Interface for the PriorityQueue Class. |
| 86 | ''' </summary> |
| 87 | ''' <typeparam name="T"></typeparam> |
| 88 | Public Class PriorityQueue(Of T As IComparable) |
| 89 | Implements IEnumerable(Of T) |
| 90 | |
| 91 | Protected list As New List(Of T) |
| 92 | |
| 93 | Public Overridable ReadOnly Property Count() As Integer |
| 94 | Get |
| 95 | Return list.Count |
| 96 | End Get |
| 97 | End Property |
| 98 | |
| 99 | Sub New() |
| 100 | End Sub |
| 101 | |
| 102 | Sub New(source As IEnumerable(Of T)) |
| 103 | list = source.ToList |
| 104 | list.Sort() |
| 105 | End Sub |
| 106 | |
| 107 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 108 | Public Overridable Sub Enqueue(queueItem As T) |
| 109 | Call list.Add(queueItem) |
| 110 | Call list.Sort() |
| 111 | End Sub |
| 112 | |
| 113 | ''' <summary> |
| 114 | ''' Add without sort |
| 115 | ''' </summary> |
| 116 | ''' <param name="x"></param> |
| 117 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 118 | Public Sub Add(x As T) |
| 119 | Call list.Add(x) |
| 120 | End Sub |
| 121 | |
| 122 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 123 | Public Sub Sort() |
| 124 | Call list.Sort() |
| 125 | End Sub |
| 126 | |
| 127 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 128 | Public Overridable Sub Clear() |
| 129 | Call list.Clear() |
| 130 | End Sub |
| 131 | |
| 132 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 133 | Public Overridable Sub Remove(o As T) |
| 134 | Call list.Remove(o) |
| 135 | End Sub |
| 136 | |
| 137 | ''' <summary> |
| 138 | ''' Poll |
| 139 | ''' </summary> |
| 140 | ''' <returns></returns> |
| 141 | Public Overridable Function Dequeue() As T |
| 142 | Dim frontItem As T = list(0) |
| 143 | list.RemoveAt(0) |
| 144 | Return frontItem |
| 145 | End Function |
| 146 | |
| 147 | Public Overridable Function Peek() As T |
| 148 | Dim frontItem As T = list(0) |
| 149 | Return frontItem |
| 150 | End Function |
| 151 | |
| 152 | Public Overrides Function ToString() As String |
| 153 | Return $"Queue {list.Count} items, 1st_item:={Peek.GetJson}" |
| 154 | End Function |
| 155 | |
| 156 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 157 | Public Overridable Function Contains(queueItem As T) As Boolean |
| 158 | Return list.Contains(queueItem) |
| 159 | End Function |
| 160 | |
| 161 | Public Overridable Iterator Function GetEnumerator() As IEnumerator(Of T) Implements IEnumerable(Of T).GetEnumerator |
| 162 | For Each x As T In list |
| 163 | Yield x |
| 164 | Next |
| 165 | End Function |
| 166 | |
| 167 | Private Iterator Function IEnumerable_GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator |
| 168 | Yield GetEnumerator() |
| 169 | End Function |
| 170 | End Class |
| 171 | End Namespace |