回答編集履歴
2
別手法
test
CHANGED
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@@ -121,3 +121,13 @@
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121
121
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}
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122
122
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123
123
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```
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124
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+
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125
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126
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127
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例えば、
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128
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129
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0. Numberでグルーピングする。
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130
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131
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0. 各グループが0と1の両方を含むかいい感じにフィルタ
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132
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133
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0. 結果のKey(=Number)を抽出
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1
コード例
test
CHANGED
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@@ -9,3 +9,115 @@
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9
9
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0. Flag0グループとFlag1グループの積集合をとる。
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10
10
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11
11
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0. その結果がOKなNumberの集合。
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12
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+
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13
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14
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15
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17
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やっつけで作った:
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18
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19
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20
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21
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```C#
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22
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23
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using System;
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24
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25
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using System.Linq;
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26
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27
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28
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29
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public class Test
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30
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31
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{
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32
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33
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public static void Main()
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34
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35
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{
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36
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37
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var source = new[]{
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38
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39
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new Element{Number = 1000,Flag = 0},
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40
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41
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new Element{Number = 1000,Flag = 1},
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42
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43
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new Element{Number = 1001,Flag = 0},
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44
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45
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new Element{Number = 1001,Flag = 1},
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46
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47
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new Element{Number = 1002,Flag = 0},
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48
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49
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new Element{Number = 1002,Flag = 0},
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50
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51
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new Element{Number = 1002,Flag = 1},
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52
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53
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new Element{Number = 1003,Flag = 0},
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54
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55
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new Element{Number = 1003,Flag = 1},
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56
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57
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new Element{Number = 1003,Flag = 1},
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58
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59
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new Element{Number = 1004,Flag = 0},
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60
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61
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new Element{Number = 1005,Flag = 0},
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62
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63
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new Element{Number = 1005,Flag = 1},
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64
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65
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new Element{Number = 1006,Flag = 0},
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66
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67
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};
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68
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69
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70
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71
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var group = source.Distinct().GroupBy(e => e.Flag, e => e.Number);
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72
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73
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var ones = group.Where(g => g.Key == 1).SelectMany(x => x);
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74
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75
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var zeros = group.Where(g => g.Key == 0).SelectMany(x => x);
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76
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77
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var whole = group.SelectMany(x => x);
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78
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79
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80
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81
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var ok = ones.Intersect(zeros);
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82
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83
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var ng = whole.Except(ok);
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84
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85
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86
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87
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88
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89
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Console.WriteLine("==========ok===========");
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90
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91
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foreach (var x in ok)
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92
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93
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Console.WriteLine(x);
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94
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95
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96
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97
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Console.WriteLine("==========ng===========");
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98
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99
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100
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101
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foreach (var x in ng)
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102
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103
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Console.WriteLine(x);
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104
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105
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106
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107
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}
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108
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109
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}
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110
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111
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112
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113
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public struct Element
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114
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|
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115
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{
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116
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117
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public int Number;
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118
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+
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119
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public int Flag;
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120
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+
|
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121
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}
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122
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+
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123
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+
```
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