Vector is better for frequent insertion and deletion, whereas Arrays are much better suited for frequent access of elements scenario. Vector occupies much more memory in exchange for managing storage and growing dynamically, whereas Arrays are a memory-efficient data structure.

Vectors have many real-life applications, including situations involving force or velocity. For example, consider the forces acting on a boat crossing a river. The boat’s motor generates a force in one direction, and the current of the river generates a force in another direction. Both forces are vectors.

Vectors are sequence containers representing arrays that can change in size. Just like arrays, vectors use contiguous storage locations for their elements, which means that their elements can also be accessed using offsets on regular pointers to its elements, and just as efficiently as in arrays.

We can think of a vector as a list that has one dimension. It is a row of data. An array is a list that is arranged in multiple dimensions. A two-dimensional array is a vector of vectors that are all of the same length.

There is a myth that for run-time speed, one should use arrays. A std::vector can never be faster than an array, as it has (a pointer to the first element of) an array as one of its data members. But the difference in run-time speed is slim and absent in any non-trivial program.

Mathematical definition of a vector is a member of the set S n , which is an ordered sequence of values in a specific set ( S ). This is what a C++ vector stores. It’s called a vector because Alex Stepanov, the designer of the Standard Template Library, was looking for a name to distinguish it from built-in arrays.

The elements in vector are placed in contiguous storage so that they can be accessed and traversed using iterators. Element is inserted at the end of the vector….Related Articles.

In general, use vector when you don’t care what type of sequential container that you’re using, but if you’re doing many insertions or erasures to and from anywhere in the container other than the end, you’re going to want to use list. Or if you need random access, then you’re going to want vector, not list.

whatever the data size is, push_back to a vector will always be faster than to a list. this is logical because vector allocates more memory than necessary and so does not need to allocate memory for each element.

Vectors (as in std::vector ) are not linked lists. For example, insertions are a constant-time operation on linked lists, while it is a linear-time operation on vectors if it is inserted in somewhere other than the end. (However, it is amortized constant-time if you insert at the end of a vector.)

their main difference is their implementation which causes different performance for different operations. linkedlist is implemented as a double linked list. its performance on add and remove is better than arraylist, but worse on get and set methods. vector is similar with arraylist, but it is synchronized.

ArrayList is non-synchronized. Vector is synchronized. ArrayList increments 50% of its current size if element added exceeds its capacity. Vector increments 100% of its current size if element added exceeds its capacity.

ArrayList internally uses a dynamic array to store its elements. LinkedList uses Doubly Linked List to store its elements. ArrayList is faster in storing and accessing data. LinkedList is faster in manipulation of data.