回答編集履歴
3
修正
answer
CHANGED
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@@ -1,4 +1,4 @@
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1
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-
以下のようにすることで抽出、ソートできます、試してみてください。
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1
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`reduce`を使用してみました、以下のようにすることで抽出、ソートできます、試してみてください。
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2
2
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※ 2つの配列を一緒に作成しているので若干読みにくいかも、、、
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3
3
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4
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ロジック部分のみ
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2
修正
answer
CHANGED
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@@ -11,14 +11,15 @@
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11
11
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var result1 = resultTuple.0
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var result2 = resultTuple.1
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14
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-
let
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14
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let yearStr = (str as NSString).substringToIndex(7)
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let dayStr = (str as NSString).substringFromIndex(8)
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if !result1.contains(
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if !result1.contains(yearStr) {
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result1 += [
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result1 += [yearStr]
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let array = [dayStr]
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result2.append(array)
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+
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} else {
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result2[result2.count - 1].append(dayStr)
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}
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@@ -40,36 +41,32 @@
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class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
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@IBOutlet weak var tableView: UITableView!
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43
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-
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44
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-
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var sectionTitleArray: [String] = []
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var sectionDataArray: [[String]] = []
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// Date Array
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var dataArray = ["2016/08/26", "2016/08/26", "2016/08/26", "2016/08/01", "2016/07/27", "2016/05/26", "2016/05/25", "2015/02/21"]
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-
var sectionDataArray: [[String]] = []
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override func viewDidLoad() {
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super.viewDidLoad()
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let resultArray
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let resultArray = dataArray.reduce(([],[])) { (resultTuple, str) -> ([String], [[String]]) in
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var result1 = resultTuple.0
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var result2 = resultTuple.1
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let
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let yearStr = (str as NSString).substringToIndex(7)
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let dayStr = (str as NSString).substringFromIndex(8)
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62
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-
if !result1.contains(
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if !result1.contains(yearStr) {
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result1 += [
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result1 += [yearStr]
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let array = [dayStr]
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result2.append(array)
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} else {
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-
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result2[result2.count - 1].append(dayStr)
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}
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-
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return (result1, result2)
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}
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@@ -81,8 +78,6 @@
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tableView.rowHeight = UITableViewAutomaticDimension
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}
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80
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-
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-
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// MARK: - TableView Delegate & DataSource
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func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
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1
修正
answer
CHANGED
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@@ -6,7 +6,7 @@
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6
6
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```swift
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7
7
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var dataArray = ["2016/08/26", "2016/08/26", "2016/08/26", "2016/08/01", "2016/07/27", "2016/05/26", "2016/05/25", "2015/02/21"]
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8
8
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9
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var resultArray
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var resultArray = dataArray.reduce(([],[])) { (resultTuple, str) -> ([String], [[String]]) in
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10
10
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11
11
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var result1 = resultTuple.0
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12
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var result2 = resultTuple.1
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