size(300,300);
background(220);

int graphX = width/10;
int graphY = height/10;
int rectH = (height-2*graphY)/10;
int factor = (width-2*graphX)/100;

int a = factor*50;
int b = factor*75;
int c = factor*48;
int d = factor*39;
int e = factor*82;
int f = factor*55;
int g = factor*65;
int j = factor*33;
int l = factor*77;
int m = factor*100;

for(int i=graphX; i<(width-graphX);i=i+rectH){
  for(int k=graphY;k<(height-graphY);k=k+rectH){ 
    stroke(150);
    fill(220);
    rect(i,k,rectH,rectH);
  }  
}

stroke(0);
strokeWeight(2);
line(graphX,graphY/2,graphX,(height-graphY/2));
line(graphX/2,(height-graphY),(width-graphX/2),(height-graphY));


graphY = height-graphY-rectH;
fill(0,0,220);
rect(graphX,graphY,a,rectH);
graphY = graphY-rectH;
fill(0,0,210);
rect(graphX,graphY,b,rectH);
graphY = graphY-rectH;
fill(0,0,200);
rect(graphX,graphY,c,rectH);
graphY = graphY-rectH;
fill(0,0,180);
rect(graphX,graphY,d,rectH);
graphY = graphY-rectH;
fill(0,0,160);
rect(graphX,graphY,e,rectH);
graphY = graphY-rectH;
fill(0,0,140);
rect(graphX,graphY,f,rectH);
graphY = graphY-rectH;
fill(0,0,120);
rect(graphX,graphY,g,rectH);
graphY = graphY-rectH;
fill(0,0,100);
rect(graphX,graphY,j,rectH);
graphY = graphY-rectH;
fill(0,0,85);
rect(graphX,graphY,l,rectH);
graphY = graphY-rectH;
fill(0,0,60);
rect(graphX,graphY,m,rectH);

float mean = (a+b+c+d+e+f+j+g+l+m)/10.0;
float lineX = graphX + mean;
stroke(240,0,0);
line(lineX, graphY, lineX, (height-graphY));
fill(220,0,0);
text("mean = "+mean,width/2,(height-graphY/2));

save("assignment_2.png");