> For the complete documentation index, see [llms.txt](https://joshualbarb.gitbook.io/leetcode-problems/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://joshualbarb.gitbook.io/leetcode-problems/hash-table/group-anagrams.md).

# Group Anagrams

## Problem

Given an array of strings `strs`, group **the anagrams** together. You can return the answer in **any order**.

An **Anagram** is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.

{% hint style="info" %}
For example:

```
Input: strs = ["eat","tea","tan","ate","nat","bat"]
Output: [["bat"],["nat","tan"],["ate","eat","tea"]]
```

{% endhint %}

## Solution

```
class Solution:
    def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
        _map = {}
        
        for i in strs:
            sorted_word = ''.join(sorted(i))
            if sorted_word not in _map:
                _map[sorted_word] = [i]
            elif sorted_word in _map:
                _map[sorted_word].append(i)
        return list(_map.values())
        
#anagrams will map to the same string if characters in
#the string are sorted

#we're going to iterate through the array of words and
#at each word, sort the letters and check if that 
#sorted word exists in the hash map


#Time: O(w*n*log n) where w is the number of words and
#n is the length of the longest word
#Space: O(w*n)
```


---

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