Swap Elements in a Vector
vector <int> v1, v2; cout << "The number of elements in v1 = " << v1.size( ) << endl; cout << "The number of elements in v2 = " << v2.size( ) << endl; cout << v1.capacity() << endl; cout << v2.capacity() << endl; v1.push_back( 1 ); v1.push_back( ...
vectorname1.swap(vectorname2)參數:The name of the vector with which the contents have to be swapped.Result:All the elements of the 2 vectors are swapped. 例子: Input:myvector1 = {1, 2, 3, 4} myvector2 = {3, 5, 7, 9} myvector1.swap(myvector2);Output:myvector1 = {3, 5, ...
All iterators, pointers and references referring to elements in both containers remain valid, and are now referring to the same elements they referred to before the call, but in the other container, where they now iterate. Note that theend iteratordoes not refer to an element and may be inval...
#include <vector> #include <iostream> using namespace std; int main(int argc, char* argv[]) { vector <int> v1, v2; cout << "The number of elements in v1 = " << v1.size( ) << endl; cout << "The number of elements in v2 = " << v2.size( ) << endl; ...
Learn how to swap the elements of a vector in Java with this comprehensive guide, including code examples and explanations.
Removes all elementsfromthe vector (which are destroyed), leaving the container with a size of0. 看清楚了吗,英文中提到的是size=0,而非capacity。写程序验证一些: #include<iostream>#include<vector>usingnamespacestd;intmain() { vector<int>v; ...
Number of elements in vectors X Vectorx. On return, contains elements copied from vectory. incX Stride withinX. For example, ifincXis 7, every 7th element is used. Y Vectory. On return, contains elements copied from vectorx. incY ...
C++ STL vector::swap() function: Here, we are going to learn about theswap() function of vector header in C++ STL with example. Submitted bySanjeev, on May 06, 2019 C++ STL vector::swap() function vector::swap() functionis used to swap/exchange the content of two vectors with the ...
vector<string>svec1(10);// vector with 10 elementsvector<string>svec2(24);// vector with 24 elementssvec1.swap(svec2); 执行swap 后,容器 svec1 中存储 24 个 string 类型的元素,而 svec2 则存储 10 个元素。 关于swap 的一个重要问题在于:该操作不会删除或插入任何元素,而且保证在常量时间内实现...