Merge pull request #30 from HighnessAtharva/patch-10

Update Validatingphonenumbers.py

Author: arsho

RegexandParsing/Validatingphonenumbers.py

@@ -4,29 +4,17 @@
 Domain    : Python
 Author    : Ahmedur Rahman Shovon
 Created   : 15 July 2016
+Updated   : 3 April 2021
 Problem   : https://www.hackerrank.com/challenges/validating-the-phone-number/problem
 '''
-# Enter your code here. Read input from STDIN. Print output to STDOUT
-n=int(raw_input())
-for i in range(0,n):
-    tmp_str=raw_input()
-    len_tmp_str=len(tmp_str)
-    if(len_tmp_str!=10):
-        ##print "LENGTH PROBLEM"
-        print "NO"
-    elif(tmp_str[0]!="7" and tmp_str[0]!="8" and tmp_str[0]!="9"):
-        ##print "START PROBLEM"        
-        print "NO"
+
+from re import compile, match
+
+n = int(input())
+for _ in range(n):
+    phone_number = input()
+    condition = compile(r'^[7-9]\d{9}$')
+    if bool(match(condition, phone_number)):
+        print("YES")
     else:
-        check=1
-        for i in tmp_str:
-            if(i>="0" and i<="9"):
-                continue
-            else:
-                check=0
-                break
-        if(check==1):
-            print "YES"
-        else:
-            ##print "NUMBER PROBLEM"            
-            print "NO"
+        print("NO")