LongestWord

longestWord

//Longest Word
//
//**Challenge**
//
//Have the function LongestWord(**sen**) take the **sen** parameter being passed and return the largest word in the string. If there are two or more words that are the same length, return the first word from the string with that length. Ignore punctuation and assume **sen** will not be empty.
//
//**Sample Test Cases**
//
//Input:"fun&!! time"
//
//Output:"time"
//
//Input:"I love dogs"
//
//Output:"love"


func longestWord(_ s: String) -> String {
    let sentence = s.components(separatedBy: " ")
    var longestWordFound = ""
    for word in sentence {
        
        let range = NSRange(location: 0, length: word.utf16.count)
        let regex = try! NSRegularExpression(pattern: "^[a-zA-Z]+$")
        if regex.firstMatch(in: word, options: [], range: range) != nil {
            if word.count > longestWordFound.count {
                longestWordFound = word
            }
        }
    }
    return longestWordFound
}