Graphics in C++ is defined to create a graphic model like creating different shapes and adding colors to it. It can be done in the C++ console by importing graphics. h library to GCC compiler. We can draw the circle, line, eclipse, and other geometric shapes too.

Object-oriented programming provides flexibility for your codebase through inheritance and polymorphism. Classes and objects (depending on the language) can also share properties and methods through inheritance. The child class or object inherits everything from its parent.

Dynamic Programming is mainly an optimization over plain recursion. Wherever we see a recursive solution that has repeated calls for same inputs, we can optimize it using Dynamic Programming. The idea is to simply store the results of subproblems, so that we do not have to re-compute them when needed later. This simple optimization reduces time complexities from exponential to polynomial.

For example, if we write simple recursive solution for Fibonacci Numbers, we get exponential time complexity and if we optimize it by storing solutions of subproblems, time complexity reduces to linear.