Implemented suggesting improvements

snippets/isAnagram.md

@@ -0,0 +1,16 @@
+### isAnagram
+
+Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters).
+
+Use `String.toLowerCase()`, `String.replace()` with an appropriate regular expression to remove unnecessary characters, `String.split('')`, `Array.sort()` and `Array.join('')` on both strings to normalize them, then check if their normalized forms are equal.
+
+```js
+const isAnagram = (str1, str2) => {
+  const normalize = str => str.toLowerCase().replace(/[^a-z0-9]/gi, '').split('').sort().join('');
+  return normalize(str1) === normalize(str2);
+}
+```
+
+```js
+isAnagram('iceman', 'cinema'); // true
+```