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 # PhoneNumberCorrecting
 To correct give number to US E.164 format
+
+Method: 
+The method in this program takes user input (String) and compares first with regular expression and then replaces 
+the string with desired format(E.164 format).
+
+If the entered number is valid it formats and returns the formatted number, else it returns null.
+
+Solution Decided:-
+example: 
+if user enters : 1231231230
+it formats to : (123) 123-1230
+
+It is not mentioned for international or local. Hence, it is limited to number with area code as prefix. 
+
+# WebsiteReferenceForRegularExpressions
+https://www.freeformatter.com/java-regex-tester.html