Challenge: Anagram Problem

Task

Write a function that accepts two strings as parameters and checks whether these strings are anagrams of each other. An anagram is a text formed by rearranging the letters of another piece of text.

The strings should not be case-sensitive, meaning that Cats and AcTs are anagrams.

The function should return 1 when the strings are anagrams and -1 otherwise.

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Sample input 1

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