How to split a string that doesn't have a separator in Swift

Question

I'm looking to split this string in 4 parts. So far i'm only able to split it using components(separatedBy:) method. However i want i also to last word teamId4 into 2 parts where i can get teamId and 4 the number. All the solutions i have looked at always have separators in them like string having either spaces, lines, full stops etc which makes it quite easy. How can i achieve this output player23, 8, teamId, 4

var player = "player23_8_chelseaId4" var splittedString: [String] { let stringArray = player.components(separatedBy: "_") let playerID = stringArray[0] let playerIndex = stringArray[1] let team = stringArray[2] // Would like "4" as the last string in the array let array = [playerID, playerIndex, team] return array }

This is the output so far

["player23", "8", "chelseaId4"]

Desired output would be

["player23", "8", "chelseaId", "4"]

Is it always "Id" before the number? What if the last part is "A123B456"? — Martin R
– Martin R, Commented Jul 4, 2019 at 11:05
The format is static. I'm always going to receive the data in that format — sk123
– sk123, Commented Jul 4, 2019 at 11:08

vadian · Accepted Answer · 2019-07-04 11:30:21Z

This is the Regular Expression solution.

In the pattern the 4 pairs of parentheses represent the 4 captured strings, \\w+ means one or more word characters. The separators are the two underscore characters and the Id string in which the latter is captured, too.

func splittedString(from player : String) throws -> [String] { var result = [String]() let pattern = "^(\\w+)_(\\w+)_(\\w+Id)(\\w+)$" let regex = try NSRegularExpression(pattern: pattern) if let match = regex.firstMatch(in: player, range: NSRange(player.startIndex..., in: player)) { for i in 1..<match.numberOfRanges { result.append(String(player[Range(match.range(at: i), in: player)!])) } } return result } let player = "player23_8_chelseaId4" let splitted = try splittedString(from: player) // ["player23", "8", "chelseaId", "4"]

If you want only chelsea without Id change the pattern to "^(\\w+)_(\\w+)_(\\w+)Id(\\w+)$"

Jaydeep Vora · Accepted Answer · 2019-07-04 11:02:01Z

var player = "player23_8_chelseaId4" var splittedString: [String] { let stringArray = player.components(separatedBy: "_") let playerID = stringArray[0] let playerIndex = stringArray[1] let team = stringArray[2] let temp = team.components(separatedBy: "Id") // Would like "4" as the last string in the array let array = [playerID, playerIndex,"\(temp[0])Id" , temp[1]] return array } print(splittedString) // ["player23", "8", "chelseaId", "4"]

D. Wolf · Accepted Answer · 2019-07-04 11:03:11Z

Is the "Id" string after every team name? So you could search for the substring Id and cut the string after it.

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