Solution: Group Anagrams
Explore how to group strings that are anagrams by tracking character frequencies instead of sorting. Understand how to use a hash map with frequency tuples as keys to efficiently organize and retrieve groups of anagrams. This lesson helps you analyze time and space complexity and apply optimized frequency mapping techniques to solve anagrams problems in 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