831. Masking Personal Information
Description
You are given a personal information string s
, representing either an email address or a phone number. Return the masked personal information using the below rules.
Email address:
An email address is:
- A name consisting of uppercase and lowercase English letters, followed by
- The
'@'
symbol, followed by - The domain consisting of uppercase and lowercase English letters with a dot
'.'
somewhere in the middle (not the first or last character).
To mask an email:
- The uppercase letters in the name and domain must be converted to lowercase letters.
- The middle letters of the name (i.e., all but the first and last letters) must be replaced by 5 asterisks
"*****"
.
Phone number:
A phone number is formatted as follows:
- The phone number contains 10-13 digits.
- The last 10 digits make up the local number.
- The remaining 0-3 digits, in the beginning, make up the country code.
- Separation characters from the set
{'+', '-', '(', ')', ' '}
separate the above digits in some way.
To mask a phone number:
- Remove all separation characters.
- The masked phone number should have the form:
"***-***-XXXX"
if the country code has 0 digits."+*-***-***-XXXX"
if the country code has 1 digit."+**-***-***-XXXX"
if the country code has 2 digits."+***-***-***-XXXX"
if the country code has 3 digits.
"XXXX"
is the last 4 digits of the local number.
Example 1:
Input: s = "LeetCode@LeetCode.com" Output: "l*****e@leetcode.com" Explanation: s is an email address. The name and domain are converted to lowercase, and the middle of the name is replaced by 5 asterisks.
Example 2:
Input: s = "AB@qq.com" Output: "a*****b@qq.com" Explanation: s is an email address. The name and domain are converted to lowercase, and the middle of the name is replaced by 5 asterisks. Note that even though "ab" is 2 characters, it still must have 5 asterisks in the middle.
Example 3:
Input: s = "1(234)567-890" Output: "***-***-7890" Explanation: s is a phone number. There are 10 digits, so the local number is 10 digits and the country code is 0 digits. Thus, the resulting masked number is "***-***-7890".
Constraints:
s
is either a valid email or a phone number.- If
s
is an email:8 <= s.length <= 40
s
consists of uppercase and lowercase English letters and exactly one'@'
symbol and'.'
symbol.
- If
s
is a phone number:10 <= s.length <= 20
s
consists of digits, spaces, and the symbols'('
,')'
,'-'
, and'+'
.
Solutions
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