Question

Supposing we are all celebrities who care about our privacy as much as our programming course grades....we hope our email address and cell phone number are masked if we type them online. Now you need to write a python/java code to realize this masking function.

Requirement: (1) Assuming the input email address is in the format of "[email protected]", all names must be converted to lowercase and all letters between the first and last letter of the name1 must be replaced by 6 asterisks ' * '. length of all names is no smaller than 2.

(2) A cellphone number is a string consisting of only the digits 0-9 or the characters from the set {'+', '-', '(', ')', ' '}. You may assume a phone number contains 10 to 13 digits. The last 10 digits make up the local number, while the digits before those make up the country code. Note that the country code is optional. We want to expose only the last 4 digits and mask all other digits. The local number should be formatted and masked as "***-***-1111", where 1 represents the exposed digits.

To mask a phone number with country code like "+111 111 111 1111"we write it in the form "+***-***-***-1111". The '+' sign and the first '-' sign before the local number should only exist if there is a country code. For example, a 12 digit phone number mask should start with "+**-".

Note that extraneous characters like "(", ")", " ", as well as extra dashes or plus signs not part of the above formatting scheme should be removed. Phone number has length at least 10.

Example 1:

Input: "[email protected]"

Output: "y*****[email protected]" ---->noticing that Y becomes y

Example 2:

Input: "[email protected]"

Output: "c*****[email protected]"

Example 3:

Input: "86-(01)12345678"

Output: "+**-***-***-5678" --> 12 digits, 2 digits for country code and 10 digits for local number

Example 4:

Input: "(312)664-7881"

Output: "***-***-7881" --> 10 digits, which means all digits make up the local number

Answer 1

def maskMail(mail:str):
    mail=mail.lower()
    at=mail.find('@')
    return mail[0]+5*'*'+mail[at-1]+mail[at:]

def maskMobile(mobile:str):
    digits=0
    for i in mobile:
        if i.isdigit():
            digits+=1
    if digits>10:
        if digits==12:
            return '+**-***-***-'+mobile[-4:]
        else:
            return '+***-***-***-' + mobile[-4:]
    else:
        return '***-***-' + mobile[-4:]

def main():
    mail=input('Enter email address to be masked: ')
    print('Masked mail:',maskMail(mail))
    mobile=input('Enter phone number to be masked: ')
    print('Masked number:',maskMobile(mobile))

if __name__ == '__main__':
    main()