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# 0049. Group Anagrams

<https://leetcode.com/problems/group-anagrams>

## Description

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.

**Example 1:**

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

**Example 2:**

```
**Input:** strs = [""]
**Output:** [[""]]
```

**Example 3:**

```
**Input:** strs = ["a"]
**Output:** [["a"]]
```

**Constraints:**

* `1 <= strs.length <= 104`
* `0 <= strs[i].length <= 100`
* `strs[i]` consists of lowercase English letters.

## ac

```java
```