feat(day 51): implement phone-number formatter for +D (DDD) DDD-DDDD output

Author: JohnSunny21

FreeCodeCamp/CodingQ/PhoneNumberFormatTest.py

@@ -0,0 +1,22 @@
+import unittest
+from PhoneNumberFormatter import format_number,format_number_optimized
+
+
+class PhoneNumberFormatterTest(unittest.TestCase):
+
+    def test1(self):
+        self.assertEqual(format_number("05552340182"),"+0 (555) 234-0182")
+
+    
+    def test2(self):
+        self.assertEqual(format_number("15554354792"),"+1 (555) 435-4792")
+
+    def test3(self):
+        self.assertEqual(format_number_optimized("05552340182"),"+0 (555) 234-0182")
+
+    def test4(self):
+        self.assertEqual(format_number_optimized("15554354792"),"+1 (555) 435-4792")
+
+
+if __name__ == "__main__":
+    unittest.main()

FreeCodeCamp/CodingQ/PhoneNumberFormatter.py

@@ -0,0 +1,34 @@
+"""
+
+Phone Number Formatter
+Given a string of ten digits, return the string as a phone number in this format: "+D (DDD) DDD-DDDD".
+"""
+
+def format_number(number):
+
+    country_code = number[0]
+
+    area_code = number[1:4]
+
+    local_start = number[4:7]
+    local_end = number[7:]
+
+    return f"+{country_code} ({area_code}) {local_start}-{local_end}"
+
+
+
+def format_number_optimized(number):
+
+    if len(number) != 11 or not number.isdigit():
+        raise ValueError("Input must be  a string of exactly 10 digits.")
+    
+
+    return f"+{number[0]} ({number[1:4]}) {number[4:7]}-{number[7:]}"
+
+
+if __name__ == "__main__":
+    print(format_number("05552340182"))
+    print(format_number("15554354792"))
+    a = "shdh."
+    a = a.replace('.','')
+    print(a)