Solution: Group Anagrams
Explore how to group a list of strings into anagrams by using frequency mapping instead of sorting. Understand the algorithm to efficiently create hash keys based on character counts, and return grouped anagrams with improved time and space complexity. This lesson helps develop skills to solve similar permutation and anagram coding interview problems.
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