回答編集履歴
2
10
answer
CHANGED
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@@ -35,7 +35,7 @@
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35
35
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まとめると、
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36
36
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37
37
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```swift
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38
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-
let integerArray = [(Int, UInt32)](repeating: (0, 0), count:
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38
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+
let integerArray = [(Int, UInt32)](repeating: (0, 0), count: 10)
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39
39
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.enumerated().map {($0.0+1, arc4random_uniform(UInt32.max))}
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40
40
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.sorted {$0.1 > $1.1}
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41
41
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.map {$0.0}
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1
まじめ
answer
CHANGED
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@@ -8,4 +8,37 @@
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8
8
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//=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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9
9
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```
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10
10
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11
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-
質問文中に「乱数」って書かれていないので。
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11
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+
質問文中に「乱数」って書かれていないので。
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12
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+
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13
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+
# 真面目に
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14
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+
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15
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+
```swift
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16
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+
let Length = 10
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17
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+
let array = [(Int, UInt32)](repeating: (0, 0), count: Length)
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18
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+
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19
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+
//1~10に乱数で重みを付ける
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20
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+
let weighted = array.enumerated().map {($0.0+1, arc4random_uniform(UInt32.max))}
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21
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+
print(weighted)
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22
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+
//=> [(1, 2394627293), (2, 3231339695), (3, 1429293380), (4, 2040053551), (5, 1055190483), (6, 2379829461), (7, 1949144040), (8, 522764666), (9, 1567954026), (10, 1966320976)]
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23
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+
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24
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//重みでソートする
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25
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+
let sorted = weighted.sorted {$0.1 > $1.1}
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26
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+
print(sorted)
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27
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+
//=> [(2, 3231339695), (1, 2394627293), (6, 2379829461), (4, 2040053551), (10, 1966320976), (7, 1949144040), (9, 1567954026), (3, 1429293380), (5, 1055190483), (8, 522764666)]
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28
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+
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29
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+
//ソート結果から1~10を取り出す
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30
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+
let integerArray = sorted.map {$0.0}
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31
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+
print(integerArray)
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32
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+
//=> [2, 1, 6, 4, 10, 7, 9, 3, 5, 8]
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33
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+
```
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34
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+
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35
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+
まとめると、
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36
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+
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37
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+
```swift
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38
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+
let integerArray = [(Int, UInt32)](repeating: (0, 0), count: Length)
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39
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+
.enumerated().map {($0.0+1, arc4random_uniform(UInt32.max))}
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40
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+
.sorted {$0.1 > $1.1}
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41
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+
.map {$0.0}
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42
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+
print(integerArray)
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43
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+
//=> [6, 3, 9, 8, 5, 10, 7, 1, 2, 4]
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44
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+
```
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