Hey guys! and sorry for my bad english :(

So, first of all, here is my code:
(I'm a beginner)

float[][] coords = new float[10][2];

void setup(){
  size(640, 480);
  fill(0);
  for(int i=0; i<10; i++){
    coords[i][0] = random(630);
    coords[i][1] = random(470);
  }
}

void draw(){
  background(10, 130, 210);
  for(int i=0; i<10; i++){
    rect(coords[i][0], coords[i][1], 10, 10);
  }
}

What i want is if the mouse just touch the random created rect processing should delete it. Ist this possible? And the rects shouldn't respawn again. If i collected, or touched, all the rects maybe the programm can write a message like "Nice, you collected all the rects!"

Do commands exist for this? And please, don't be to severe with me, i'm a beginner (:

Hey guys! First: Sorry for my bad english :(

so, this is my code:

void setup(){
 
  size(640, 480);
  background(255);
 
  fill(0);
 
  for(int i=0; i<10; i++){
    rect(random(630), random(470), 10, 10);
}
}

void draw(){