Sha256: 124b30ce2ade6718f38ac9f00a0a2bf6190ab2f688c6b6406caf204c58aadc57
Contents?: true
Size: 1.08 KB
Versions: 137
Compression:
Stored size: 1.08 KB
Contents
import Foundation
struct Transpose {
static func transpose(_ input: [String]) -> [String] {
let maxLineLength = input.map { $0.characters.count }.max()
guard let maxLength = maxLineLength else {
return []
}
var result = [String](repeatElement("", count: maxLength))
for i in 0..<maxLength {
for line in input {
if let start = line.index(line.startIndex, offsetBy: i, limitedBy: line.endIndex),
let end = line.index(start, offsetBy: 1, limitedBy: line.endIndex) {
let character = line[start..<end]
result[i].append(character)
} else {
result[i].append(" ")
}
}
}
return result.map { stripTrailingWhitespace($0) }
}
private static func stripTrailingWhitespace(_ input: String) -> String {
var result = input
while result.hasSuffix(" ") {
result.remove(at: result.index(before: result.endIndex))
}
return result
}
}
Version data entries
137 entries across 137 versions & 1 rubygems