Validate International Securities Identification Number: Difference between revisions
Validate International Securities Identification Number (view source)
Revision as of 11:19, 6 March 2024
, 2 months agoAdded Dart
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Line 1,138:
AU0000VXGZA3 is valid
FR0000988040 is valid</pre>
=={{header|Dart}}==
<syntaxhighlight lang="dart">bool checkISIN(String isin) {
int j = 0, v = 0;
List<int> s = List.filled(24, 0);
for (int i = 0; i < 12; i++) {
int k = isin.codeUnitAt(i);
if (k >= '0'.codeUnitAt(0) && k <= '9'.codeUnitAt(0)) {
if (i < 2) return false;
s[j++] = k - '0'.codeUnitAt(0);
} else if (k >= 'A'.codeUnitAt(0) && k <= 'Z'.codeUnitAt(0)) {
if (i == 11) return false;
k -= 'A'.codeUnitAt(0) - 10;
s[j++] = k ~/ 10;
s[j++] = k % 10;
} else {
return false;
}
}
if (isin.length > 12) return false;
for (int i = j - 2; i >= 0; i -= 2) {
int k = 2 * s[i];
v += k > 9 ? k - 9 : k;
}
for (int i = j - 1; i >= 0; i -= 2) {
v += s[i];
}
return v % 10 == 0;
}
void main() {
List<String> test = [
"US0378331005",
"US0373831005",
"U50378331005",
"US03378331005",
"AU0000XVGZA3",
"AU0000VXGZA3",
"FR0000988040"
];
for (String isin in test) {
print('$isin - ${checkISIN(isin)}');
}
}</syntaxhighlight>
{{out}}
<pre>US0378331005 - true
US0373831005 - false
U50378331005 - false
US03378331005 - false
AU0000XVGZA3 - true
AU0000VXGZA3 - true
FR0000988040 - true</pre>
=={{header|Delphi}}==
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