Is MAC48 Address
Description
A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment.
The standard (IEEE 802) format for printing MAC-48 addresses in human-friendly form is six groups of two hexadecimal digits (0
to 9
or A
to F
), separated by hyphens (e.g. 01-23-45-67-89-AB
).
Your task is to check by given string inputString
whether it corresponds to MAC-48 address or not.
Example
- For
inputString = "00-1B-63-84-45-E6"
, the output should beisMAC48Address(inputString) = true
; - For
inputString = "Z1-1B-63-84-45-E6"
, the output should beisMAC48Address(inputString) = false
; - For
inputString = "not a MAC-48 address"
, the output should beisMAC48Address(inputString) = false
.
Input/Output
-
[execution time limit] 4 seconds (js)
-
[input] string inputString
Guaranteed constraints:
15 ≤ inputString.length ≤ 20
. -
[output] boolean
true
ifinputString
corresponds to MAC-48 address naming rules,false
otherwise.
[JavaScript (ES6)] Syntax Tips
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// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}
Solution
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function isMAC48Address(inputString) {
return /^[0-9A-F]{2}(?:-[0-9A-F]{2}){5}$/.test(inputString);
}