vector resize

In practice, the vector series in c ++ -- copy set to vector (do not confuse reserve and resize) The stl algorithm has a copy function. We can easily write this Code: #include #include #include using namespace std;int _tmain(int argc,

STD: Difference Between Reserve and resize of Vector1. Reserve: Allocate space, change capacity but not size2.Resize: Allocate space. Changing the capacity also changes the size. If you know the vector size, resize it as an array without

There is a copy function in the STL algorithm. We can easily write this code:#include #include #include using namespace STD;int_tmain (intARGC, _tchar* argv[]) {Doubledarray[Ten]={1.0,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9}; vectordouble>Vdouble (Ten);

Document directory 1. carray <> vs: STD: vector <>? 2.: STD: vector <> where? 3.: type definition in STD: vector <> 4.: STD: vector <> Construction 5. Access elements in the vector <> 6.: STD: vector <> storage management 7. add elements to

Transfer from http://blog.sina.com.cn/s/blog_9f1c0931010180cy.htmlVectorsVector is part of the C + + Standard Template Library, which is a multifunctional template class and function library that can manipulate a variety of data structures and

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For vector usage, the additional time consumed by copying data to prevent reallocate memory. The following two combinations can be used to prevent reallocate. 1. Vector: resize () using array index 2. Vector: Reserve () Use push_back ().  

  Standard Library Vector type Use the required header file: # Include Vector: Vector is a class template. It is not a data type. Vector is a data type.   I. Definition and initialization Vector v1; // The default constructor v1 is empty. Vector

Standard Template Library (STL) learn to explore the vector containerC + + VectorsVector is part of the C + + Standard Template Library, which is a multifunctional template class and function library that can manipulate a variety of data structures

Vector Common Methods assign () assigning values to elements in vectors void assign (Input_iterator start, Input_iterator end); //void assign (Size_type num, const type &VAL); Reserve () sets the vector smallest element to hold the quantity function