Solution: Group Anagrams
Explore how to group strings into anagram groups by using frequency mapping instead of sorting. Learn to implement a hash map keyed by character counts, analyze time and space complexity, and optimize your approach to solve anagrams efficiently in C++ coding interviews.
Statement
Given a list of strings strs, group together all strings that are anagrams of each other.
An anagram is a string formed by rearranging the letters of another string, using all original letters exactly once. For example, “eat”, “tea”, and “ate” are anagrams.
Return a list of groups, where each group contains strings that are anagrams of each other.
Note: The order of the groups and the order of strings within each group does not matter.
Constraints:
Let strs be the list of strings given as input to find the anagrams.
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strs.length