Functions that allow you to check for the indexes at which a character appears in a string in Swift.

String character Indexing Swift

// returns a dictionary that holds the indexes for every character in a string
func StringIndexer(str:String) ->Dictionary<Int, Character> {
    var strlist = Array(str); var strdict = [Int:Character](); var indexer = 0
    for letter in strlist {
        strdict.updateValue(letter, forKey: indexer)
        indexer += 1
    }
    return strdict
}
// returns an array containing the indexes where a character appears in a string
func FindIndexCharacter(str:String, char:Character) ->Array<Int> {
    let strdict = StringIndexer(str); var indexer = 0; var indexes = [Int]()
    while indexer < count(str)-1 {
        if strdict[indexer] == char {
            indexes.append(indexer)
        }
        indexer += 1
    }
    return indexes
}


FindIndexCharacter("hello", "l")
// [2, 3]