초기화 벡터는 여러 가지 방법으로 수행할 수 있습니다.
1) push_back() 메소드로 벡터 초기화
알고리즘
Begin Declare v of vector type. Call push_back() function to insert values into vector v. Print “Vector elements:”. for (int a : v) print all the elements of variable a. End.
예시
#include<iostream> #include <bits/stdc++.h> using namespace std; int main() { vector<int> v; v.push_back(6); v.push_back(7); v.push_back(10); v.push_back(12); cout<<"Vector elements:"<<endl; for (int a : v) cout << a << " "; return 0; }
출력
Vector elements: 6 7 10 12
2) 배열로 벡터 초기화
알고리즘
Begin Create a vector v. Initialize vector like array. Print the elements. End.
예시
#include <bits/stdc++.h> using namespace std; int main() { vector<int> v{ 1, 2, 3, 4, 5, 6, 7 }; cout<<"vector elements:"<<endl; for (int a : v) cout << a << " "; return 0; }
출력
vector elements: 1 2 3 4 5 6 7
3) 다른 벡터에서 벡터 초기화
알고리즘
Begin Create a vector v1. Initialize vector v1 by array. Initialize vector v2 by v1. Print the elements. End.
예시
#include<iostream> #include <bits/stdc++.h> using namespace std; int main() { vector<int> v1{ 1, 2, 3, 4, 5, 6, 7 }; vector<int> v2(v1.begin(), v1.end()); cout<<"vector elements:"<<endl; for (int a : v2) cout << a << " "; return 0; }
출력
vector elements: 1 2 3 4 5 6 7
4) 크기와 요소를 지정하여 벡터 초기화
알고리즘
Begin Initialize a variable s. Create a vector v with size s and all values with 7. Initialize vector v1 by array. Initialize vector v2 by v1. Print the elements. End.
예시
#include<iostream> #include <bits/stdc++.h> using namespace std; int main() { int s= 5; vector<int> v(s, 7); cout<<"vector elements:"<<endl; for (int a : v) cout << a << " "; return 0; }
출력
vector elements: 7 7 7 7 7