C++ 提高编程 List容器

 

 

 

 

 

 

#include <list>

void printList(const list<int>& L) {

    for (list<int>::const_iterator it = L.begin(); it != L.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
}

void test01()
{
    list<int>L1;
    L1.push_back(10);
    L1.push_back(20);
    L1.push_back(30);
    L1.push_back(40);

    printList(L1);

    list<int>L2(L1.begin(),L1.end());
    printList(L2);

    list<int>L3(L2);
    printList(L3);

    list<int>L4(10, 1000);
    printList(L4);
}

int main() {

    test01();

    system("pause");

    return 0;
}

 

 

 

#include <list>

void printList(const list<int>& L) {

    for (list<int>::const_iterator it = L.begin(); it != L.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
}

//赋值和交换
void test01()
{
    list<int>L1;
    L1.push_back(10);
    L1.push_back(20);
    L1.push_back(30);
    L1.push_back(40);
    printList(L1);

    //赋值
    list<int>L2;
    L2 = L1;
    printList(L2);

    list<int>L3;
    L3.assign(L2.begin(), L2.end());
    printList(L3);

    list<int>L4;
    L4.assign(10, 100);
    printList(L4);

}

//交换
void test02()
{

    list<int>L1;
    L1.push_back(10);
    L1.push_back(20);
    L1.push_back(30);
    L1.push_back(40);

    list<int>L2;
    L2.assign(10, 100);

    cout << "交换前： " << endl;
    printList(L1);
    printList(L2);

    cout << endl;

    L1.swap(L2);

    cout << "交换后： " << endl;
    printList(L1);
    printList(L2);

}

int main() {

    //test01();

    test02();

    system("pause");

    return 0;
}

 

 

#include <list>

void printList(const list<int>& L) {

    for (list<int>::const_iterator it = L.begin(); it != L.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
}

//大小操作
void test01()
{
    list<int>L1;
    L1.push_back(10);
    L1.push_back(20);
    L1.push_back(30);
    L1.push_back(40);

    if (L1.empty())
    {
        cout << "L1为空" << endl;
    }
    else
    {
        cout << "L1不为空" << endl;
        cout << "L1的大小为： " << L1.size() << endl;
    }

    //重新指定大小
    L1.resize(10);
    printList(L1);

    L1.resize(2);
    printList(L1);
}

int main() {

    test01();

    system("pause");

    return 0;
}

 

 

#include <list>

void printList(const list<int>& L) {

    for (list<int>::const_iterator it = L.begin(); it != L.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
}

//插入和删除
void test01()
{
    list<int> L;
    //尾插
    L.push_back(10);
    L.push_back(20);
    L.push_back(30);
    //头插
    L.push_front(100);
    L.push_front(200);
    L.push_front(300);

    printList(L);

    //尾删
    L.pop_back();
    printList(L);

    //头删
    L.pop_front();
    printList(L);

    //插入
    list<int>::iterator it = L.begin();
    L.insert(++it, 1000);
    printList(L);

    //删除
    it = L.begin();
    L.erase(++it);
    printList(L);

    //移除
    L.push_back(10000);
    L.push_back(10000);
    L.push_back(10000);
    printList(L);
    L.remove(10000);
    printList(L);
    
    //清空
    L.clear();
    printList(L);
}

int main() {

    test01();

    system("pause");

    return 0;
}

 

 

#include <list>

//数据存取
void test01()
{
    list<int>L1;
    L1.push_back(10);
    L1.push_back(20);
    L1.push_back(30);
    L1.push_back(40);

    
    //cout << L1.at(0) << endl;//错误 不支持at访问数据
    //cout << L1[0] << endl; //错误  不支持[]方式访问数据
    cout << "第一个元素为： " << L1.front() << endl;
    cout << "最后一个元素为： " << L1.back() << endl;

    //list容器的迭代器是双向迭代器，不支持随机访问
    list<int>::iterator it = L1.begin();
    //it = it + 1;//错误，不可以跳跃访问，即使是+1
}

int main() {

    test01();

    system("pause");

    return 0;
}

 

 

void printList(const list<int>& L) {

    for (list<int>::const_iterator it = L.begin(); it != L.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
}

bool myCompare(int val1 , int val2)
{
    return val1 > val2;
}

//反转和排序
void test01()
{
    list<int> L;
    L.push_back(90);
    L.push_back(30);
    L.push_back(20);
    L.push_back(70);
    printList(L);

    //反转容器的元素
    L.reverse();
    printList(L);

    //排序
    L.sort(); //默认的排序规则 从小到大
    printList(L);

    L.sort(myCompare); //指定规则，从大到小
    printList(L);
}

int main() {

    test01();

    system("pause");

    return 0;
}