int num=20;
float[] sdr=new float[num]; 
int many= sdr.length;
int firstX=10, firstY=40, SPACING=11;
int nextX, nextY, wbig;
float big, multiplier;

void setup() {
  size(600, 480);
  scene();
  smooth();
  frameRate(30);
  int wbig=-1;
  fillSDR();
 }
void scene() {
  int x = width/2;
  int y = height/2;
  background(0);
  fill(80);
  rectMode(CENTER);
  rect(x, y-15, 589, 422);
  fill(20, 170, 200);
  text("Array Filled : ", x+70, 30);
  text("Array Sorted : ", x+70, 50);
  text("Greatest Value : ", x+70, 70); 
  text("PROJECT 5: Array  #Samuel Roman", 5, 475);
  fill(255);  
  text("Press F Key to Fill Array", x+40, 320);
  text("Press S Key to Sory Array", x+40, 340);
  text("Press B key to find Biggest number",x+40,360);
  text("Press M key to Send Biggest to End", x+40, 380);
  text("Press N Key to Send 2nd Biggest to End", x+40, 400);
}

void draw() {
  showBig();  // for loop 
  show();    // show all
}
void keyPressed() {
  if (key == 'f') { // fill array
    int wbig=-1;
    scene();
    fillSDR(); // for loop*
    show(sdr, many); 
    fill(0, 255, 0);
    text("Process complete", 453, 30);
  }
    if (key == 'b') {
    scene();
    show(sdr, many);
    showBig();  // find big
    println("Biggest :"+big);
    fill(0, 255, 0); //  output greatest
    text(big, 475, 70);
  }
     if (key == 's') { // sort array
    scene();
    for (int i=many;i>1;i--) { //  find greatest
      int k = wbig(sdr, i);      
      swap( sdr, k, i-1);    //  move greatest to end then shrink
    }
    show(sdr, many); // update & show array
    fill(0, 255, 0);
    text("Process complete", 460, 50);
  }
    if (key == 'm') {
    scene(); 
    bigEnd(sdr, many); // find biggest && send to end
    show(sdr, many); // update && show sarray
    fill(0, 255, 0);
    text("Biggest SENT to END", 370, 90);
  }
    if (key == 'n') {
    scene();
    for (int i=many; i>1; i=0) { // find second biggest
      int k= wbig(sdr, i-1);
      swap(sdr, k, i-2); // swap to 2nd spot before end
    }
    show(sdr, many); // update && show array
    fill(0, 255, 0);
    text("2nd Biggest SENT to END", 360, 90);
  }
  /*
  if (key == 'd') {
   int dub=sdr.sort();
   scene();
   */
}
void fillSDR() { // fill array random int from 0-100
  for (int i=0; i<many; i++) { 
    sdr[i] = int(random(0.0, 100.0));
  }
}
void sortSDR(float[] sdr, int many ) { // sory array from least to greatest
  for (int i=many;i>1;i--) { //  find greatest
    int k = wbig(sdr, i);      
    swap( sdr, k, i-1);    // move greatest to end then shrink
  }
  show(sdr, many); // update && show array
} 
void bigEnd(float[] sdr, int many) { // send big to end
  for (int i=many; i>1;i=0) {
    int k= wbig(sdr, i); // biggest
    swap(sdr, k, i-1); // swap to end
  }
  show(sdr, many); // update && show array
} 
void swap(float[] sdr, int k, int i) { // swap 2 elements of an array
  float tmp;
  tmp= sdr[k];
  sdr[k] = sdr[i];
  sdr[i] = tmp;
}
int wbig(float[] sdr, int many) { // where the biggest number is 

  int w=0;
  for (int j=1; j<many; j++) {
    if (sdr[j] > sdr[w]) w=j;
  }
  return w;
}

void show(float[] sdr, int many) {
  nextX=firstX;
  nextY=firstY;
  int k= wbig(sdr, many);
  big= sdr[k];       // new biggest in array
  multiplier= (width-370) / big;  // bar length && display 

  scene();
  for (int i=0;i<many;i++) {
    display(sdr[i]);
  }
}

void display(float v) { // display numbers & bar();
  fill(255);
  text(v, nextX, nextY); 
  bar(v);     
  nextY += 20;
}
void bar(float v) { // bar properties 
  float x, y, w, h;
  x= nextX+60;
  y= nextY-SPACING;
  w= v*multiplier;
  h= SPACING;
  
  fill(0, 255, 0);
  rectMode(CORNER);
  rect(x, y, w, h);
}

void showBig() { //  show GREATEST #
big = sdr[0];
  for (int j=0; j<many; j++) { 
    if (sdr[j] > big) big= sdr[j];
  }
}