STL_算法_填充新值
fill(b, e, v)
fill(b, n, v)
generate(b, n, p)
generate_n(b, n, p)
#include<iostream> #include<algorithm> #include<vector> #include<list> // #include<string> using namespace std; int main() { list<string> slist; slist.push_back("hello"); slist.push_back("hi"); slist.push_back("good mornig"); // fill fill_n 算法只能填充固定值 fill(slist.begin(), slist.end(), "hao"); for (list<string>::iterator iter = slist.begin(); iter != slist.end(); iter++) cout << *iter << ' '; cout << endl; list<string> slist2; fill_n(back_inserter(slist2), 9, "hello"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; fill_n(ostream_iterator<float>(cout, " "), 10, 7.7); cout << endl; fill(slist2.begin(), slist2.end(), "again"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; fill_n(slist2.begin(), slist2.size() - 2, "hi"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; list<string>::iterator pos1, pos2; pos1 = slist2.begin(); pos2 = slist2.end(); fill(++pos1, --pos2, "hmmm"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; // system("pause"); return 0; }
#include<iostream> #include<algorithm> #include<vector> #include<list> // #include<string> using namespace std; int main() { list<string> slist; slist.push_back("hello"); slist.push_back("hi"); slist.push_back("good mornig"); // fill fill_n 算法只能填充固定值 fill(slist.begin(), slist.end(), "hao"); for (list<string>::iterator iter = slist.begin(); iter != slist.end(); iter++) cout << *iter << ' '; cout << endl; list<string> slist2; fill_n(back_inserter(slist2), 9, "hello"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; fill_n(ostream_iterator<float>(cout, " "), 10, 7.7); cout << endl; fill(slist2.begin(), slist2.end(), "again"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; fill_n(slist2.begin(), slist2.size() - 2, "hi"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; list<string>::iterator pos1, pos2; pos1 = slist2.begin(); pos2 = slist2.end(); fill(++pos1, --pos2, "hmmm"); for (list<string>::iterator iter = slist2.begin(); iter != slist2.end(); iter++) cout << *iter << ' '; cout << endl; list<int> ilist; // back_inserter() 插入迭代器 generate_n(back_inserter(ilist), 5, rand); for (list<int>::iterator iter = ilist.begin(); iter != ilist.end(); iter++) cout << *iter << ' '; cout << endl; generate(ilist.begin(), ilist.end(), rand); for (list<int>::iterator iter = ilist.begin(); iter != ilist.end(); iter++) cout << *iter << ' '; cout << endl; // system("pause"); return 0; }
时间: 2024-08-05 02:51:20