Reverse words in a sentence - Swift

Question

How to perform reversing of all words in a sentence.

Example

let str = \"Hello playground\"

Result should be like \"olleH dnuorg

Answer 1

Building on the OPs answer, if you wanted to follow English capitalization rules on the output:

var str = "Hello playground"

let result = str.split(separator: " ").enumerated().map {
    let reversed = String($0.1.reversed())
    return $0.0 == 0 ? reversed.capitalized : reversed.lowercased()
    }
    .joined(separator: " ")
print("Rerversing letters in each word = \"" + result + "\"") // Olleh dnuorgyalp

Also note that multiple spaces would mess this up, as would commas, periods, and other word/sentence delimiters.