Suppose I have to code a program to draw 1000 circles with 6 different colors – Which Structural Pattern approach would help?

The Flyweight Pattern is specifically designed to minimize memory usage by sharing intrinsic state (common data like colors) among multiple objects. For 1000 circles with only 6 colors, Flyweight would share the 6 color objects rather than storing color with each circle, dramatically reducing memory. Facade simplifies interfaces, Decorator adds responsibilities dynamically, and Adapter converts interfaces - none optimize memory like Flyweight.