C++ fill fill_n generate generate_n
#include <iostream>
#include <algorithm>
#include <vector>
#include <list>
#include <string>
#include <functional>
#include<iterator>
using namespace std;
int main()
{
list<string> list1;
list1.push_back("A");
list1.push_back("B");
list1.push_back("C");
list<string>::iterator list_iter1;
for (list_iter1 = list1.begin(); list_iter1 != list1.end(); ++list_iter1)
{
cout << *list_iter1 << " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
fill(list1.begin(), list1.end(), "D");
for (list_iter1 = list1.begin(); list_iter1 != list1.end(); ++list_iter1)
{
cout << *list_iter1 << " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
list<string> list2;
for (int k=0;k<12;k++)
{
list2.push_back("E");
}
list<string>::iterator list_iter2;
for (list_iter2 = list2.begin(); list_iter2 != list2.end(); ++list_iter2)
{
cout << *list_iter2 << " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
fill_n(list2.begin(), 9, "F");
for (list_iter2 = list2.begin(); list_iter2 != list2.end(); ++list_iter2)
{
cout << *list_iter2 << " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
list<int> list3;
generate_n(back_inserter(list3), 5, rand);
list<int>::iterator list_iter3;
for (list_iter3 = list3.begin(); list_iter3 != list3.end(); ++list_iter3)
{
cout << *list_iter3<< " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
generate(list3.begin(), list3.end(), rand);
for (list_iter3 = list3.begin(); list_iter3 != list3.end(); ++list_iter3)
{
cout << *list_iter3 << " ";
}
cout << endl;
cout << "------------------------------------------" << endl;
system("pause");
return 0;
}
====================================================
A B C
------------------------------------------
D D D
------------------------------------------
E E E E E E E E E E E E
------------------------------------------
F F F F F F F F F E E E
------------------------------------------
41 18467 6334 26500 19169
------------------------------------------
15724 11478 29358 26962 24464
------------------------------------------
请按任意键继续. . .
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