C++ 提高教程 STLvector容器插入和删除

Posted 2021-10-31 行码阁119

 

# include<iostream>
#include<vector>
# include<algorithm>
# include<string>
using namespace std;

void printVector(vector<int>& v)
{
	for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
	{
		cout << *it << " ";
	}
	cout << endl;
}
void test01()
{
	vector<int>v1;
	for (int i = 0; i < 10; i++)
	{
		v1.push_back(i*10);
	}
	printVector(v1);
	//尾删
	v1.pop_back();
	printVector(v1);
	//插入 第一个数是迭代器
	v1.insert(v1.begin(), 100);
	printVector(v1);

	v1.insert(v1.begin(), 3,100);
	printVector(v1);

	v1.erase(v1.begin());
	printVector(v1);

	v1.erase(v1.begin(),v1.end());
	printVector(v1);
}
int main()
{
	test01();
	system("pause");
	return 0;
}