Problem
Contains Duplicate is an easy level problem, and is #242 on Leetcode. For the full description, see here. In Valid Anagram, you are given two strings s and t, where the goal is to return True if the two strings are anagrams of each other, and False otherwise.
An anagram is a word or phrase formed by rearranging the letters of another. Take, for example, the word anagram and the nonsensical aaagnram. Since they both use the same set of letters to form a ‘word’, they are considered an anagram (in our case, where we aren’t worried about coherence).
The amount of ways you can approach this problem was smaller than I had expected, with there essentially being