Group Anagrams
Detailed guide and Python implementation for the 'Group Anagrams' problem.
Problem Statement
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.
Write a function groupAnagrams(strs: List[str]) -> List[List[str]].
- •1 <= len(strs) <= 10^4
- •0 <= len(strs[i]) <= 100
- •strs[i] consists of lowercase English letters
Examples
strs = ["eat", "tea", "tan", "ate", "nat", "bat"]
[["bat"], ["nat", "tan"], ["ate", "eat", "tea"]]
"eat", "tea", and "ate" are anagrams of each other. "tan" and "nat" are anagrams. "bat" has no anagram in the list.
strs = [""]
[[""]]
A single empty string forms its own group.
strs = ["a"]
[["a"]]
A single character string forms its own group.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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