回答編集履歴
5
訂正
test
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@@ -8,6 +8,8 @@
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```swift
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import UIKit
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@@ -26,7 +28,7 @@
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print(fileNames.newFileName)
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print(fileNames.newFileName) // => "fileName_004"
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}
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extension String {
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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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```
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---
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4
訂正
test
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@@ -2,7 +2,119 @@
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---
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備忘目的追記
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import UIKit
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class ViewController: UIViewController {
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let fileNames = ["03", "fileName_094", "fileName_056", "BBB", "45", "fileName_001", "fileName_002", "fileName_005"]
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override func viewDidLoad() {
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super.viewDidLoad()
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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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let prefixStr: String = "fileName_"
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let maxDigit = self.map { $0.numberStr.count }.max() ?? 1
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let suffixNumbers: [Int] = self.map { Int($0.numberStr) ?? 0 }.sorted(by: <)
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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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return prefixStr + newSuffixNumber
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}
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}
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---
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6
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7
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8
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3
訂正
test
CHANGED
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@@ -104,6 +104,16 @@
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104
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// 配列が空だったら？ -> 1を返す？
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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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// 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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// 最終的にはStringを返す？
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let numArray: [Int] = self.map { ($0.number ?? 0) }.sorted(by: <)
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2
訂正
test
CHANGED
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@@ -16,7 +16,7 @@
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let fileNames = ["AA003", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005", "kaegei990785304743", "08307320683"]
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let fileNames = ["AA003y", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005", "kaegei990785304743", "08307320683"]
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@@ -28,7 +28,7 @@
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print("num: (fileNames.fileNumber)") => num: Optional("
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print("num: (fileNames.fileNumber)") => num: Optional("3")
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@@ -48,7 +48,7 @@
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var number: Int? {
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-
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// 正規表現わかんない
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guard let regex = try? NSRegularExpression(pattern: "^*[\d]+$", options: []) else {
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1
追記
test
CHANGED
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@@ -16,7 +16,7 @@
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-
let fileNames = ["AA003", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005"]
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let fileNames = ["AA003", "094", "556", "BBB", "DE45", "BB001", "CCDFR002", "005", "kaegei990785304743", "08307320683"]
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