[C++] 필기시험 대비(참고용)

 

 

Resize

#include <iostream>
#include <vector>
 
using namespace std;
int main(){
    vector<int> v;
 
    //1, 2, 3, 4, 5, 6, 7, 8, 9, 10
    for (int i = 1; i <= 10; i++)
        v.push_back(i);
 
    //1, 2, 3, 4, 5
    v.resize(5);
 
    //1, 2, 3, 4, 5, 100, 100, 100
    v.resize(8, 100);
 
    //1, 2, 3, 4, 5, 100, 100, 100, 0, 0, 0, 0
    v.resize(12);
 
    return 0;
}
 
 

 

Insert

 

#include <iostream>
#include <vector>
 
using namespace std;
 
int main(){
    vector<int> v(3, 100);
 
    vector<int>::iterator it = v.begin();
 
    //200, 100, 100, 100
    it = v.insert(it, 200);
 
    //300, 300, 200, 100, 100, 100
    v.insert(it, 2, 300); //정수
 
 
    // "it" no longer valid, get a new one
    it = v.begin();
 
    vector<int> anothervector(2, 400);
    //300, 300, 400, 400, 200, 100, 100, 100
    v.insert(it + 2, anothervector.begin(), anothervector.end());
 
 
    int myarray[] = { 501, 502, 503 };
    //501, 502, 503, 300, 300, 400, 400, 200, 100, 100, 100
    v.insert(v.begin(), myarray, myarray + 3); //메모리 주소
 
    return 0;
}
 
 

 

기타