How should I practice Group Anagrams?

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Group Anagrams

Goldman Sachs● MediumINTERNONSITE INTERVIEW

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Problem statement

Group the strings in strs so that two strings appear in the same group exactly when they are anagrams.

For deterministic output, sort the strings inside each group and then sort the groups lexicographically by their first string.

Function

groupAnagrams(strs: String[]) → String[][]

Examples

Example 1

strs = ["eat","tea","tan","ate","nat","bat"]return = [["ate","eat","tea"],["bat"],["nat","tan"]]

Example 2

strs = [""]return = [[""]]