C++ list demo

#include <iostream>
#include <list>
using namespace std;
void PrintList(list<int> l_int) {
    cout << "PrintList:";
    for (list<int>::iterator it = l_int.begin();it!=l_int.end();it++)
    {
        cout << *it << " ";
    }
    cout << endl;
}
void PrintListR(list<int> l_int) {
    cout << "PrintListR:";
    for (list<int>::reverse_iterator it = l_int.rbegin(); it != l_int.rend(); it++)
    {
        cout << *it << " ";
    }
    cout << endl;
}
int main() {
    list<int> l_int;
    l_int.push_back(1);
    l_int.push_front(2);
    PrintList(l_int);
    PrintListR(l_int);
    l_int.insert(l_int.begin(), 1, 5);  //第一个元素前插入1个5
    PrintList(l_int);
    cout << "l_int.front(): " << l_int.front() << endl;
    cout << "l_int.back(): " << l_int.back() << endl;

    l_int.push_back(5);
    l_int.push_back(8);
    cout << "执行pop前" << endl;
    PrintList(l_int);
    l_int.pop_front();
    l_int.pop_back();
    cout << "执行pop后" << endl;
    PrintList(l_int);

    cout << "erase" << endl;
    l_int.erase(++l_int.begin());
    PrintList(l_int);

    cout << "assign" << endl;
    l_int.assign(9, 9);
    PrintList(l_int);

    cout << "max_size:" << l_int.max_size() << endl;
    cout << "size:" << l_int.size() << endl;
    cout << "empty:" << l_int.empty() << endl;

    l_int.clear(); //
    PrintList(l_int);

    l_int.push_back(4);
    l_int.push_back(3);
    l_int.push_back(7);
    l_int.push_back(9);
    l_int.push_back(1);
    l_int.push_back(3);
    l_int.push_back(2);
    l_int.push_back(3);
    l_int.push_back(7);
    cout << "sort" << endl;
    PrintList(l_int);
    l_int.sort();
    PrintList(l_int);

    list<int> l_int2(l_int);
    cout << "list2" << endl;
    PrintList(l_int2);

    cout << "unique" << endl;
    l_int2.unique();
    PrintList(l_int2);

    l_int2.clear();
    l_int2.push_back(1);
    l_int2.push_back(14);
    l_int2.push_back(12);
    l_int2.push_back(13);

    list<int> l_m(l_int);
    list<int> l_m1(l_int2);

    PrintList(l_int);
    PrintList(l_int2);
    cout << "splice" << endl;
    l_int.splice(l_int.begin(), l_int2, l_int2.begin(), l_int2.end());
    //l_int.splice(l_int.begin(), l_int2, l_int2.begin());
    PrintList(l_int);
    PrintList(l_int2);

#if 1
    PrintList(l_m);
    PrintList(l_m1);
    l_m.sort();
    l_m1.sort();
    cout << "merge" << endl;
    l_m.merge(l_m1);
    PrintList(l_m);
    PrintList(l_m1);
#endif
    

    getchar();
}

 

显示：

PrintList:2 1
PrintListR:1 2
PrintList:5 2 1
l_int.front(): 5
l_int.back(): 1
执行pop前
PrintList:5 2 1 5 8
执行pop后
PrintList:2 1 5
erase
PrintList:2 5
assign
PrintList:9 9 9 9 9 9 9 9 9
max_size:357913941
size:9
empty:0
PrintList:
sort
PrintList:4 3 7 9 1 3 2 3 7
PrintList:1 2 3 3 3 4 7 7 9
list2
PrintList:1 2 3 3 3 4 7 7 9
unique
PrintList:1 2 3 4 7 9
PrintList:1 2 3 3 3 4 7 7 9
PrintList:1 14 12 13
splice
PrintList:1 14 12 13 1 2 3 3 3 4 7 7 9
PrintList:
PrintList:1 2 3 3 3 4 7 7 9
PrintList:1 14 12 13
merge
PrintList:1 1 2 3 3 3 4 7 7 9 12 13 14
PrintList: