Genetic Algorithm - Fit max circles inside box I am using a genetic algorithm to find the best way to pack circles inside a box without each touching the others and filling as much space as possible. My doubt is if an individual from a generation must be a circle or all the circles. 

Can anyone help me on how would I go from here? Thank you
In genetic algorithms, each individual should be a candidate solution to the problem.  You're trying to find a packing of circles into the box, so each individual should be a complete packing that specifies the location of all the circles.