How should I practice Group Anagrams?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Microsoft onsite interview problems in FastPrep.

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Group Anagrams

Microsoft● MediumNEW GRADONSITE 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 lexicographically, then sort the groups lexicographically by their complete arrays.

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 = [[""]]

Constraints

1 <= strs.length <= 10^4
0 <= strs[i].length <= 100
Every string contains only lowercase English letters.
The total number of characters is at most 10^5.