BREAKOUT Project - Help with collision detection

Processing Coding Questions
26

I used a loop to draw 50 blocks (5 rows, 10 columns). Then I said ok, if blocks[i]==1, the block will appear. If blocks[i]==0, the block will disappear.

//Je dessine mes briques - boucle for 
  for (i=0; i<50; i++) {
    bx = i%10*110+10; 
    by = 40*(i/10)+10; 
    // Les briques apparaissent et sont dessinées si blocks[i]==1, elles disparaissent si blocks[i]==0
    if (blocks[i]==1) { 
      // Draw the block
      fill(255);
      stroke(0);
      rect(bx+40, by+10, bw, bh);
    }

If the ball come close to the top, bottom or sides and hit the block, then I reverse the speed and the block also disappear.

//Détection collision entre ma balle et les briques
    //Detect collision top-bottom blocks
    if(xBalle > (bx+4) && xBalle < (bx+96) &&
    yBalle > by && yBalle<(by+30) && blocks[i]==1){ //OK
      blocks[i]=0; //Disparition
      ySpeed = - ySpeed;
  }
    //Detect collision sides
   if (((xBalle > (bx-5) && xBalle < bx) || (xBalle > (bx+100) && xBalle < (bx+105))) &&
      yBalle > by && yBalle < (by+30) && blocks[i]==1) { //OK
      blocks[i]=0; //Disparition
      xSpeed = - xSpeed;
      }
      
    if (((xBalle > (bx-1) && xBalle < (bx+5)) || (xBalle > (bx+95) && xBalle < (bx+101))) &&
      yBalle > by && yBalle <(by+30) && blocks[i]==1) { //OK
      blocks[i]=0; //Disparition
      xSpeed = - xSpeed; 
      ySpeed = - ySpeed;
  }
  }