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An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these resultsresulting digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these results is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these resulting digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these digitsresults is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these results is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string representing the barcode digits
- A list of the barcode's digits
- A non-negative integer (you can assume leading zeroes where none are given, i.e.
1=00000001)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False
An EAN-8 barcode includes 7 digits of information and an 8th checksum digit.
The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the next multiple of 10.
For example, given the digits 2103498:
Digit: 2 1 0 3 4 9 8
Multiplier: 3 1 3 1 3 1 3
Result: 6 1 0 3 12 9 24
The sum of these digits is 55, so the checksum digit is 60 - 55 = 5
The Challenge
Your task is to, given an 8 digit barcode, verify if it is valid - returning a truthy value if the checksum is valid, and falsy otherwise.
- You may take input in any of the following forms:
- A string, 8 characters in length, representing the barcode digits
- A list of 8 integers, the barcode's digits
- A non-negative integer (you can either assume leading zeroes where none are given, i.e.
1=00000001, or request input with the zeroes given)
- Builtins that compute the EAN-8 checksum (i.e, take the first 7 digits and calculate the last) are banned.
- This is code-golf, so the shortest program (in bytes) wins!
Test Cases
20378240 -> True
33765129 -> True
77234575 -> True
00000000 -> True
21034984 -> False
69165430 -> False
11965421 -> False
12345678 -> False