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isAnagram: anagrams

Write a function isAnagram(a, b) that checks whether two strings consist of the same letters in the same quantities.

Ignore case and spaces: "Dormitory" and "dirty room" are anagrams.

function isAnagram(a, b) {
  // ...
}

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Tests (6)

expect(isAnagram("listen", "silent")).toBe(true);

expect(isAnagram("Dormitory", "dirty room")).toBe(true);

expect(isAnagram("hello", "world")).toBe(false);

expect(isAnagram("aab", "abb")).toBe(false);

expect(isAnagram("abc", "abcd")).toBe(false);