feat(day 6): implement whitespace-insensitive anagram checker using Counter

Author: JohnSunny21

FreeCodeCamp/CodingQ/AnagramChecker.py

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+"""
+======================================================>         Anagram Checker      <=====================================================
+
+Given two strings, determine if they are anagrams of each other (contain the same characters in any order).
+
+Ignore casing and white space.
+
+===========================================================================================================================
+O/P : =====>
+
+1. are_anagrams("listen", "silent") should return true.
+2. are_anagrams("School master", "The classroom") should return true.
+3. are_anagrams("A gentleman", "Elegant man") should return true.
+
+"""
+from collections import Counter
+def are_anagrams(str1,str2):
+
+    # return sorted(str1.lower()) == sorted(str2.lower()) # Solution 1
+    # return Counter(str1.lower()) == Counter(str2.lower()) # Solution 2
+
+    # As the problem says to ignore whitespace, but this code still counts the spaces as characters. so need to
+    # remove the whitespaces.
+
+    # are_anagrams("listen", "silent")        # ✅ True
+    # are_anagrams("conversation", "voices rant on")
+    if len(str1) != len(str2):
+        return False
+    clean1 = str1.replace(" ","").lower()
+    clean2 = str2.replace(" ","").lower()
+    return Counter(clean1) == Counter(clean2)
+
+
+
+if __name__ == "__main__":
+    print(are_anagrams("listen", "silent"))
+    print(are_anagrams("Hello", "World"))
+    print(are_anagrams("School master", "The classroom"))
+
+
+

FreeCodeCamp/CodingQ/AnagramCheckerTest.py

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+import unittest
+from AnagramChecker import are_anagrams
+
+
+class AnagramCheckerTest(unittest.TestCase):
+
+    def test1(self):
+        self.assertEqual(are_anagrams("listen", "silent"),True)
+
+    def test2(self):
+        self.assertEqual(are_anagrams("School master", "The classroom"),True)
+
+    def test3(self):
+        self.assertEqual(are_anagrams("A gentleman", "Elegant man"),True)
+
+    def test4(self):
+        self.assertEqual(are_anagrams("Hello", "World"),False)
+
+    def test5(self):
+        self.assertEqual(are_anagrams("apple", "banana"),False)
+
+    def test6(self):
+        self.assertEqual(are_anagrams("cat", "dog"),False)
+
+
+
+if __name__ == "__main__":
+    unittest.main()