Group Anagrams

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

Example 1:

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

Example 2:

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

Constraints:

• 1 ≤ strs.length ≤ 10⁴
• 0 ≤ strs[i].length ≤ 100
• strs[i] consists of lowercase English letters