[swift] LeetCode 49. Group Anagrams

Given an array of strings, group anagrams together.

Example:

Input: ["eat", "tea", "tan", "ate", "nat", "bat"],

Output: [ [“ate”,”eat”,”tea”], [“nat”,”tan”], [“bat”] ]

Note:

All inputs will be in lowercase.
The order of your output does not matter.

func groupAnagrams(_ strs: [String]) -> [[String]] {var dict = [String: [String]]()strs.forEach {let s = String($0.sorted())dict[s] = (dict[s] == nil) ? [$0] : dict[s]! + [$0]}return dict.map({$0.value})
}

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