std::vector<int> first;//default(1)std::vector<int> second(4,100);//fill(2)std::vector<int> third(second.begin(), second.end());//range(3)std::vector<int> fourth(third);//copy(4)//the iterator constructor can also be used to construct from arrays:intmyints[] = {16,2,77,...
其它,如构造方法不一致,Vector可以通过构造方法初始化capacityIncrement,另外还有其它一些方法,如indexOf方法,Vector支持从指定位置开始搜索查找;另外,Vector还有一些功能重复的冗余方法,如addElement,setElementAt方法,之所以这样,是由于历史原因,像addElement方法是以前遗留的,当集合框架引进的时候,Vector加入集合大家族,改成实...
Add element at the end Adds a new element at the end of the vector, after its current last element.The content of val is copied (or moved) to the new element. 注意: This effectively increases the container size by one, which causes an automatic reallocation of the allocated storage space...
首先,你需要定义一个 std::vector 对象,并指定其存储的元素类型。例如,如果你想存储整数类型的元素,可以定义一个 std::vector<int> 对象。cpp std::vector<int> myVector; 使用push_back() 函数向 std::vector 中添加元素: push_back() 函数用于在 std::vector 的末尾添加一个元素。你可...
#include <iostream>#include <vector>intmain(){// Create a vector containing integersstd::vector<int>v={8,4,5,9};// Add two more integers to vectorv.push_back(6);v.push_back(9);// Overwrite element at position 2v[2]=-1;// Print out the vectorfor(intn:v)std::cout<<n<<'...
vector<int> arNumbers; // add four elements to our array arNumbers.push_back(12); arNumbers.push_back(24); arNumbers.push_back(36); arNumbers.push_back(48); // remove the second element from the array, what we say // looks like element 1, but because we start counting from //...
v.push_back(t): add an element to v. v1==v2: returntrueif number and values are equal intmain(){ vector<int> avec{1,2,3}; vector<int> bvec{1,2,3}; cout << (avec==bvec) << endl; cout << (&avec==&bvec) << endl;return0; ...
value << std::endl; std::cout << "Vector's first element value: " << vec[0].value << std::endl; return 0; } 输出将会是: Original value: 20 Vector's first element value: 10 这表明,原始对象的修改并没有影响到 vector 中的对象。vector 中的对象保留了插入时的状态。 需要注意...
using namespacestd; // saves us typing std:: before vector voidmain() { // create an array of integers vector<int> arNumbers; // add four elements to our array arNumbers.push_back(12); arNumbers.push_back(24); arNumbers.push_back(36); ...
std::vector<std::string> designElements; public: void addElement(const std::string& element) { designElements.push_back(element); } void generateDesign() { std::cout << "Generating design with elements:"; for (const auto& element : designElements) { ...