gistfile1.swift

var words = [ "tea", "dog", "eat", "god", "ate", "bratwurst" ]

//
// pair each word with a unique key of the letters in that word
// by sorting the letters of the word
//
let pairs = words.map { (word) -> (key : String, word : String)  in
	let key = String (seq: sorted (word))
	return (key : key, word: word)
}

//
// Group all the words that have the same set of letters and filter
// out any lists that have less than two entries
//
let anagrams = pairs.reduce ([String:Array<String>](), { (var dict, pair) in
	var wordList : Array<String> = dict[pair.key] ?? [];

	wordList.append (pair.word)
	dict [pair.key] = wordList

	return dict;
}).values.filter ({$0.count > 1})


for value in anagrams {
	println("Anagrams: \(value)")
}