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Problem: Valid Anagram

Explore how to determine if two strings are anagrams by implementing a frequency counting approach with hash maps in C++. Understand the algorithm's linear time complexity and constant space usage for lowercase letters, and consider adaptations for Unicode characters.

Statement

Given two strings s and t, determine whether t is an anagram of s. Return TRUE if it is, and FALSE otherwise.

An anagram is a word formed by rearranging all the letters of another word, using every letter exactly once.

Note: What if the inputs contain Unicode characters? How would you adapt your solution for that case?

Constraints:

  • 11 \leq s.length, t.length 5×104\leq 5 \times 10^4 ...