벡터는 동적 배열을 구현하는 시퀀스 컨테이너 클래스입니다. 즉, 요소를 추가할 때 크기가 자동으로 변경됩니다. 벡터는 인접한 메모리 위치에 요소를 저장하고 런타임에 필요에 따라 메모리를 할당합니다.

자바의 수학적 방법

벡터와 배열의 차이점

배열은 정적 접근 방식을 따르므로 런타임 중에 크기를 변경할 수 없으며 벡터는 동적 배열을 구현하므로 요소를 추가할 때 자동으로 크기가 조정됩니다.

통사론

벡터 'v1'을 고려해보세요. 구문은 다음과 같습니다.

 vector v1; 

예

간단한 예를 살펴보겠습니다.

클릭 시 jquery

 #include #include using namespace std; int main() { vector v1; v1.push_back(&apos;javaTpoint &apos;); v1.push_back(&apos;tutorial&apos;); for(vector::iterator itr=v1.begin();itr!=v1.end();++itr) cout&lt;<*itr; return 0; } < pre> <p> <strong>Output:</strong> </p> <pre> javaTpoint tutorial </pre> <p>In this example, vector class has been used to display the string.</p> <h2>C++ Vector Functions</h2> <table class="table"> <tr> <th>Function</th> <th>Description</th> </tr> <tr> <td> at() </td> <td>It provides a reference to an element.</td> </tr> <tr> <td> back() </td> <td>It gives a reference to the last element.</td> </tr> <tr> <td> front() </td> <td>It gives a reference to the first element.</td> </tr> <tr> <td> swap() </td> <td>It exchanges the elements between two vectors.</td> </tr> <tr> <td> push_back() </td> <td>It adds a new element at the end.</td> </tr> <tr> <td> pop_back() </td> <td>It removes a last element from the vector.</td> </tr> <tr> <td> empty() </td> <td>It determines whether the vector is empty or not.</td> </tr> <tr> <td> <a href="/c-vector-insert">insert()</a> </td> <td>It inserts new element at the specified position.</td> </tr> <tr> <td> erase() </td> <td>It deletes the specified element.</td> </tr> <tr> <td> resize() </td> <td>It modifies the size of the vector.</td> </tr> <tr> <td> clear() </td> <td>It removes all the elements from the vector.</td> </tr> <tr> <td> <a href="/c-vector-size">size()</a> </td> <td>It determines a number of elements in the vector.</td> </tr> <tr> <td> capacity() </td> <td>It determines the current capacity of the vector.</td> </tr> <tr> <td> assign() </td> <td>It assigns new values to the vector.</td> </tr> <tr> <td> operator=() </td> <td>It assigns new values to the vector container.</td> </tr> <tr> <td> operator[]() </td> <td>It access a specified element.</td> </tr> <tr> <td> end() </td> <td>It refers to the past-lats-element in the vector.</td> </tr> <tr> <td> emplace() </td> <td>It inserts a new element just before the position pos.</td> </tr> <tr> <td> emplace_back() </td> <td>It inserts a new element at the end.</td> </tr> <tr> <td> rend() </td> <td>It points the element preceding the first element of the vector.</td> </tr> <tr> <td> rbegin() </td> <td>It points the last element of the vector.</td> </tr> <tr> <td> begin() </td> <td>It points the first element of the vector.</td> </tr> <tr> <td> max_size() </td> <td>It determines the maximum size that vector can hold.</td> </tr> <tr> <td> cend() </td> <td>It refers to the past-last-element in the vector.</td> </tr> <tr> <td> cbegin() </td> <td>It refers to the first element of the vector.</td> </tr> <tr> <td> crbegin() </td> <td>It refers to the last character of the vector.</td> </tr> <tr> <td> crend() </td> <td>It refers to the element preceding the first element of the vector.</td> </tr> <tr> <td> shrink_to_fit() </td> <td>It reduces the capacity and makes it equal to the size of the vector.</td> </tr> </table></*itr;>

이 예에서는 벡터 클래스를 사용하여 문자열을 표시했습니다.

C++ 벡터 함수