❀STL
Nevermore Lang
# 1. string
# 2. vector
#include <iostream>
#include <vector>
int main()
{
// 智能指针默认析构delete一次，对于初始化的数组，需要定制删除器
std::vector<int> vec;
vec.push_back(1);
vec.push_back(2);
vec.push_back(3);
vec.push_back(4);
std::vector<int>::iterator it;
for(it = vec.begin(); it != vec.end(); ++it) {
if((*it) == 4) {
vec.insert(it, 9);
break; // 插入后一定要break，否则迭代器失效会造成Segmentation fault
}
}
for(auto x : vec) {
std:: cout << x << " ";
}
std:: cout << std::endl;
return 0;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
