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std:: vector - cppreference. com The storage of the vector is handled automatically, being expanded as needed Vectors usually occupy more space than static arrays, because more memory is allocated to handle future growth
C++ STL vector容器详解 - C语言中文网 vector 常被称为 向量容器,因为该容器擅长在尾部插入或删除元素,在常量时间内就可以完成,时间复杂度为 O(1);而对于在容器头部或者中部插入或删除元素,则花费时间要长一些(移动元素需要耗费时间),时间复杂度为线性阶 O(n)。
Vector space - Wikipedia Vector addition and scalar multiplication: a vector v (blue) is added to another vector w (red, upper illustration) Below, w is stretched by a factor of 2, yielding the sum v + 2w In mathematics and physics, a vector space (also called a linear space) is a set whose elements, often called vectors, can be added together and multiplied ("scaled") by numbers called scalars The operations of