Standardize Mobile Number Using Decorators

Hacker
Rank
Score
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of Morocco
22.50
48578
flag of United States
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of Turkey
22.50
48578
flag of Germany
22.50
48578
flag of United States
22.50
48578
flag of Argentina
22.50

[deleted]

48578
flag of null
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of India
22.50
48578
flag of Greece
22.50
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