49 Group Anagrams.js

https://leetcode.com/problems/group-anagrams/submissions/


49. Group Anagrams
Medium

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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.


var groupAnagrams = function(strs) {
  let hash = {}, anagrams = [];

  for (let i = 0; i < strs.length; i++) {
    let word = strs[i].split('').sort();
    hash[word] = hash[word] || [];
    hash[word].push(strs[i]);
  }
  return Object.values(hash);
};