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#include <iostream>
#include <algorithm>
#include <functional>
#include <vector>
#include <ctime>
#include <cstdlib>
using namespace std;
// random generator function:
ptrdiff_t myrandom (ptrdiff_t i)
{
return rand()%i;
}
// pointer object to it:
ptrdiff_t (*p_myrandom)(ptrdiff_t) = myrandom;
int main ()
{
srand ( unsigned ( time (NULL) ) );
vector<int> myvector;
vector<int>::iterator it;
// set some values:
for (int i=1; i<=100; ++i) myvector.push_back(i); // 1 2 3 4 5 6 7 8 9....100
// using built-in random generator:
random_shuffle ( myvector.begin(), myvector.end() );
// using myrandom:
random_shuffle ( myvector.begin(), myvector.end(), p_myrandom);
// print out content:
cout << "myvector contains:";
for (it=myvector.begin(); it!=myvector.end(); ++it)
cout << " " << *it;
cout << endl;
return 0;
}