Group Anagrams

The 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, using all the original letters exactly once. Examples Input: strs = ["eat","tea","tan","ate","nat","bat"] Output: [["bat"],["nat","tan"],["ate","eat","tea"]] Explanation: * There is no string in strs that can be rearranged to form "bat." * The strings "nat" and "tan" are anagrams as they can be rearranged to form each other....