add is_anagram

snippets/is_anagram.md

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+### is_anagram
+
+Determine if 2 strings are anagrams.
+
+Returns true if 2 strings are anagrams of each other, false otherwise.
+Capital letters and whitespaces are ignored.
+
+``` python
+def is_anagram(str1, str2):
+    str1, str2 = str1.replace(" ", ""), str2.replace(" ", "")
+
+    if len(str1) != len(str2):
+        return False
+    else:
+        return sorted(str1.lower()) == sorted(str2.lower())
+```
+
+``` python
+is_anagram("anagram", "Nag a ram")  # True
+```