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func occurrencesOfCharacters(in text: String) -> [Character: Int] { | |
var dict: [Character: Int] = [:] | |
for key in text { | |
if dict[key] == nil { | |
dict[key] = 1 | |
}else{ | |
dict[key]! += 1 | |
} | |
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var dict = ["Eins" : 1, "Zwei": 2] | |
func isInvertible(_ dictionary: [String: Int]) -> Bool { | |
var isItTrue = true | |
var array : [Int] = [] | |
for numbers in dict.values { | |
if array.contains(numbers) == false { |
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func divideIfWhole(_ value: Int, by divisor: Int) -> Int? { | |
var answer: Int? = 0 | |
let divisible = value % divisor | |
switch divisible { | |
case 0: | |
answer = value / divisor | |
default: | |
answer = nil | |
} | |
return answer |