回答編集履歴
5
訂正
answer
CHANGED
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@@ -3,6 +3,7 @@
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3
3
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---
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4
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備忘目的追記
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5
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6
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+
```swift
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import UIKit
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class ViewController: UIViewController {
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@@ -12,12 +13,12 @@
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override func viewDidLoad() {
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super.viewDidLoad()
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-
print(fileNames.newFileName)
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print(fileNames.newFileName) // => "fileName_004"
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}
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}
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extension String {
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-
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// 同一接頭句でないと連番の意味が薄れるが念の為。
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var numberStr: String {
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guard let regex = try? NSRegularExpression(pattern: "^*[\d]+$", options: []) else {
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@@ -56,6 +57,7 @@
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}
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}
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```
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---
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62
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63
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```swift
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4
訂正
answer
CHANGED
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@@ -1,7 +1,63 @@
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1
1
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playground調子が悪かったので…
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2
2
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3
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+
---
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4
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備忘目的追記
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3
5
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6
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+
import UIKit
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4
7
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8
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class ViewController: UIViewController {
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9
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10
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let fileNames = ["03", "fileName_094", "fileName_056", "BBB", "45", "fileName_001", "fileName_002", "fileName_005"]
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12
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override func viewDidLoad() {
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13
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super.viewDidLoad()
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14
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print(fileNames.newFileName)
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}
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}
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extension String {
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var numberStr: String {
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guard let regex = try? NSRegularExpression(pattern: "^*[\d]+$", options: []) else {
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return ""
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}
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let results = regex.matches(in: self, options: [], range: NSMakeRange(0, self.count))
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var str: String = ""
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for i in 0 ..< results.count{
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for j in 0 ..< results[i].numberOfRanges{
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let range = results[i].range(at: j)
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str.append((self as NSString).substring(with: range))
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}
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}
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return str
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}
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}
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extension Array where Element == String {
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var newFileName: String {
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45
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let prefixStr: String = "fileName_"
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46
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let maxDigit = self.map { $0.numberStr.count }.max() ?? 1
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48
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let suffixNumbers: [Int] = self.map { Int($0.numberStr) ?? 0 }.sorted(by: <)
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50
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51
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let newSuffixNumber: String
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= String(format: "%0(maxDigit)d", ((1...).lazy.map { $0 }.first { !suffixNumbers.contains($0) }) ?? 0 )
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53
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return prefixStr + newSuffixNumber
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56
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}
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57
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}
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58
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---
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60
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+
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5
61
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```swift
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6
62
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import UIKit
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7
63
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3
訂正
answer
CHANGED
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@@ -51,6 +51,11 @@
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51
51
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52
52
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var fileNumber: String? {
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53
53
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54
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// 配列が空だったら？ -> 1を返す？
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55
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// ファイル名に数値がなかったら -> 1を返す?
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56
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// 桁数調整(入ってくる連番の桁数とのかねあいも考慮)
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57
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// 最終的にはStringを返す？
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58
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54
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let numArray: [Int] = self.map { ($0.number ?? 0) }.sorted(by: <)
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55
60
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56
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guard let max = numArray.max() else { return nil }
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2
訂正
answer
CHANGED
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@@ -7,13 +7,13 @@
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7
7
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8
8
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class ViewController: UIViewController {
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9
9
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10
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-
let fileNames = ["
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10
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+
let fileNames = ["AA003y", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005", "kaegei990785304743", "08307320683"]
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11
11
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12
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override func viewDidLoad() {
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14
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super.viewDidLoad()
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15
15
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16
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-
print("num: (fileNames.fileNumber)") => num: Optional("
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+
print("num: (fileNames.fileNumber)") => num: Optional("3")
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}
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@@ -23,7 +23,7 @@
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23
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extension String {
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24
24
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25
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var number: Int? {
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26
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-
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26
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+
// 正規表現わかんない
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27
27
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guard let regex = try? NSRegularExpression(pattern: "^*[\d]+$", options: []) else {
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28
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return nil
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29
29
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}
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1
追記
answer
CHANGED
|
@@ -7,7 +7,7 @@
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7
7
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8
8
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class ViewController: UIViewController {
|
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9
9
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10
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-
let fileNames = ["AA003", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005"]
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10
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+
let fileNames = ["AA003", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005", "kaegei990785304743", "08307320683"]
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11
11
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12
12
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13
13
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override func viewDidLoad() {
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