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SEDOLs: Difference between revisions
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B0YBKT7</pre>
=={{header|C++}}==
<lang cpp>
#include <numeric>
#include <algorithm>
#include <cctype>
#include <iostream>
#include <stdexcept>
#include <iterator>
#include <vector>
using namespace std;
const int weights[] = {1,3,1,7,3,9};
const string valid_chars = "BCDFGHJKLMNPQRSTVWXYZ0123456789";
int char_value(char c){ return isalpha(c) ? c -'A' + 10 : c - '0'; }
int sedol_checksum(string const& sedol)
{
//Check contents
if(sedol.size() != 6)
throw length_error("length of sedol string != 6");
if(sedol.find_first_not_of(valid_chars) != std::string::npos)
throw invalid_argument("sedol string contains disallowed characters");
vector<int> char_values;
transform(sedol.begin(), sedol.end(), back_inserter(char_values), char_value);
const int weighted_sum = inner_product(char_values.begin(), char_values.end(), weights, 0);
return (10 - (weighted_sum % 10)) % 10;
}
int main()
{
char * inputs[] = {
"710889",
"B0YBKJ",
"406566",
"B0YBLH",
"228276",
"B0YBKL",
"557910",
"B0YBKR",
"585284",
"B0YBKT",
"B00030"
};
const size_t n_inputs = sizeof(inputs) / sizeof(*inputs);
for(size_t i = 0; i != n_inputs; ++i)
{
cout << inputs[i] << sedol_checksum(inputs[i]) << "\n";
}
}
</lang>
=={{header|C sharp|C#}}==
<lang csharp>
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