processing animation in loop - animation

Question

so its my first day using processing and i need a bit of help to start with this is my code, im doing the selection sort:
int[] numbers; // Declare array
int currentmin;
int exchange=0;
void setup() {
frameRate(0.1);
size(500,500);
numbers = new int[10]; // Create array with 10 cells
background(105);
for (int i = 0; i < numbers.length; i++) { // random numbers from 1 to 100
int r = int(random(1,100)); // create random numbers
for (int j=0; j<numbers.length; j++) { //make sure not duplications
if(numbers[j]==r)
{r=r+1;}
}
numbers[i]=r; //fill array with random numbers
println(r);
}
fill(255,0,0);
for (int i = 0; i < numbers.length; i++) { //draw rectangles
rect(i*40+10,400 ,35, -numbers[i]);
}
for (int j=0; j < numbers.length; j++){ //set pivot number
currentmin=numbers[j];
for (int i=j+1; i < numbers.length; i++){ //find lowest number in array
if (numbers[i] < currentmin) {
currentmin = numbers[i];
}
}
for ( int i=j; i<numbers.length;i++){ //swap pivot with lowest number
if ( numbers[i]==currentmin){
exchange=numbers[j];
numbers[j]=numbers[i];
numbers[i]=exchange;
//here
}
}
}
}
void draw() {
background(105);
for (int z = 0; z < numbers.length; z++) {
rect(z*40+10,400 ,35, -numbers[z]);
}
}
as you can see where i have the comment here im trying to make the thing animated and to see the rectangles change place on each iteration in the first loop, but its not working... any help ? i tried calling draw(); hopelessly but it didnt work... anyway i can get a help ?

Answer 1

This isn't exactly a trivial animation to execute. You should really start with something simpler.
But to answer your question, you wouldn't put your animation inside a for loop. Instead, you need to make it so the draw() function draws a single frame of the animation. Processing automatically calls the draw() function 60 times per second, so by changing what's drawn each time, you create an animation.
Shameless self-promotion: I wrote a tutorial on creating animations in Processing available here.