// Run program
void setup() {
size(200, 150);
background(200, 255, 220);

ArrayList<Integer> newList = RNG(40);

displayResults(sortHeights(newList), heightSum(newList), heightMean(newList));

save("activity22.png");

}

// Function 1: (Psuedo) Randomly generate a list of heights between 100 to 200
ArrayList<Integer> RNG(int number){   
  ArrayList<Integer> heightList = new ArrayList<Integer>();
    for(int i = 0; i < number; i++){
      heightList.add((int)round(random(100, 200)));
    }
   return heightList;
}

// Function 2: Sort the list into 3 categories (static list.)
int[] sortHeights(ArrayList<Integer> heightList){ 
  int[] heightCategory = new int[3];  
  for(int i = 0; i < heightList.size(); i++){
    if(heightList.get(i) < 134){
      heightCategory[0]++;
    } else if(heightList.get(i) < 167){
      heightCategory[1]++;
    } else {
      heightCategory[2]++;
    }
  }
  return heightCategory;
}

// Function 3: Calculate the sum of all heights
int heightSum(ArrayList<Integer> newList){
  int sum = 0;
  for(int i = 0; i < newList.size(); i++){    
    sum = sum + newList.get(i);
  }
  return sum;
}

// Function 4: Calculate the mean of all heights
float heightMean(ArrayList<Integer> newList){
  float mean = 0;
  for(int i = 0; i < newList.size(); i++){
    mean = mean + newList.get(i) / newList.size();
  }
  return mean;
}


// Function 5: Display results on the canvas. 
void displayResults(int[] sortHeights, int sum, float mean){
  fill(0);
  textSize(14);
  text("Height 100-133:     " + sortHeights[0], 10, 20);
  text("Height 133-166:     " + sortHeights[1], 10, 40);
  text("Height 166-200:     " + sortHeights[2], 10, 60);
  line(10, 70, 175, 70);
  text("Sum of all heights: " + sum, 10, 90);
  text("Mean height:        " + mean, 10, 110);
}