回答編集履歴
4
dictionary から空の要素を除外した
answer
CHANGED
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@@ -1,10 +1,6 @@
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1
1
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```C#
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2
2
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void Main()
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3
3
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{
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4
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-
var dictionary = Enumerable.Range(0, 10)
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5
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-
.Select(_ => new { Index = _, List = new List<int>() })
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6
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-
.ToDictionary(_ => _.Index, _ => _.List);
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7
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-
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8
4
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IEnumerable<int> Generate(int maxValue)
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9
5
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{
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10
6
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var random = new Random();
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@@ -15,15 +11,17 @@
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15
11
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}
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16
12
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}
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17
13
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18
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-
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14
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+
var dictionary = Generate(101)
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15
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+
.Select(value =>
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19
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-
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16
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{
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20
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-
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17
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Console.WriteLine($"0～100の値を出力:{value}");
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18
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return value;
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19
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+
})
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20
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.TakeWhile(value => value != 0)
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21
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.GroupBy(value => value % 10)
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22
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.ToDictionary(_ => _.Key, _ => _.ToList());
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21
23
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22
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-
if (value == 0) break;
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23
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-
dictionary[value % 10].Add(value);
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24
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-
}
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25
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-
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26
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-
foreach (var i in
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24
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+
foreach (var i in dictionary.Keys.OrderBy(_ => _))
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27
25
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{
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28
26
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Console.WriteLine($"一の位が{i} : {string.Join(" ", dictionary[i])}");
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29
27
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}
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3
List<int>\[\] を Dictionary<int, List<int>> に修正した
answer
CHANGED
|
@@ -1,29 +1,31 @@
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1
1
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```C#
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2
2
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void Main()
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3
3
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{
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4
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+
var dictionary = Enumerable.Range(0, 10)
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4
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-
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5
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+
.Select(_ => new { Index = _, List = new List<int>() })
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6
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+
.ToDictionary(_ => _.Index, _ => _.List);
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5
7
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6
8
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IEnumerable<int> Generate(int maxValue)
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7
9
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{
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8
10
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var random = new Random();
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9
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-
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11
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+
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10
12
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while (true)
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11
13
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{
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12
14
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yield return random.Next(maxValue);
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13
15
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}
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14
16
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}
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15
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-
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17
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+
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16
18
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foreach (var value in Generate(101))
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17
19
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{
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18
20
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Console.WriteLine($"0～100の値を出力:{value}");
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19
21
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20
22
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if (value == 0) break;
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21
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-
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23
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+
dictionary[value % 10].Add(value);
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22
24
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}
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23
25
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24
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-
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26
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+
foreach (var i in Enumerable.Range(0, 10))
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25
27
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{
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26
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-
Console.WriteLine($"一の位が{i} : {string.Join(" ",
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28
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+
Console.WriteLine($"一の位が{i} : {string.Join(" ", dictionary[i])}");
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27
29
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}
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28
30
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}
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29
31
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```
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2
リファクタリングした
answer
CHANGED
|
@@ -2,21 +2,28 @@
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2
2
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void Main()
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3
3
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{
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4
4
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var rows = Enumerable.Range(0, 10).Select(_ => new List<int>()).ToArray();
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5
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-
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6
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-
var random = new Random();
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7
5
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8
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-
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6
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+
IEnumerable<int> Generate(int maxValue)
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9
7
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{
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8
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+
var random = new Random();
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9
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+
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10
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+
while (true)
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11
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{
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10
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-
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12
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yield return random.Next(maxValue);
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13
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+
}
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14
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+
}
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15
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+
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16
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+
foreach (var value in Generate(101))
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17
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+
{
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11
18
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Console.WriteLine($"0～100の値を出力:{value}");
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12
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-
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19
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+
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13
20
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if (value == 0) break;
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14
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-
rows[value
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21
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+
rows[value % 10].Add(value);
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15
22
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}
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16
23
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17
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-
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24
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+
for (var i = 0; i < rows.Length; i++)
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18
25
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{
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19
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-
Console.WriteLine($"一の位が{
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26
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+
Console.WriteLine($"一の位が{i} : {string.Join(" ", rows[i].Select(v => v.ToString()))}");
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20
27
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}
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21
28
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}
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22
29
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```
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1
values と Values が混在して見苦しいので改名した
answer
CHANGED
|
@@ -1,7 +1,7 @@
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1
1
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```C#
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2
2
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void Main()
|
|
3
3
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{
|
|
4
|
-
var
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4
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+
var rows = Enumerable.Range(0, 10).Select(_ => new List<int>()).ToArray();
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|
5
5
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|
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6
6
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var random = new Random();
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|
7
7
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|
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@@ -11,10 +11,10 @@
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11
11
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Console.WriteLine($"0～100の値を出力:{value}");
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12
12
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13
13
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if (value == 0) break;
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14
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-
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14
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+
rows[value - ((value / 10) * 10)].Add(value);
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|
15
15
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}
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16
16
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17
|
-
foreach (var row in
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17
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+
foreach (var row in rows.Select((v, i) => new { Index = i, Values = v }))
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18
18
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{
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19
19
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Console.WriteLine($"一の位が{row.Index} : {string.Join(" ", row.Values.Select(v => v.ToString()))}");
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20
20
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}
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