删除区间

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int n, a[20];

int main() {
    // vector<int> v;
    // cin >> n;
    // for (int i = 0; i < n; i++) {
    //     cin >> a[i];
    //     v.push_back(a[i]);            
    // }
    vector<int> v{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    for (auto x : v) {
        cout << x << " ";
    }
    v.erase(v.begin() + 2, v.begin() + 5); // 删除在[2,5)间的元素(第2,3,4号元素)
    puts("");
    for (auto x : v) {
        cout << x << " ";
    }
    return 0;
}

https://www.acwing.com/blog/content/6854/

数组和vector

https://www.cnblogs.com/love-yh/p/7410666.html
https://blog.csdn.net/zxyhhjs2017/article/details/92826730

c++ 将vector转化为数组

https://www.coonote.com/cplusplus-note/vector-to-array.html

https://www.jb51.net/article/224671.htm

C++ 数组转换vector

    int arr[] = {1, 2, 3, 4, 5};
    vector<int> v(arr, arr+5);
    for (auto i : v) {
        cout << i << ' ';
    }
    cout << endl;