​

function setup() {

  createCanvas(400, 400);

  textSize(15);

}

​

function draw() {

  background(220);

​

  text("The first element: " + numbers[0], 10, 20);

  text("The last element: " + numbers[4], 10, 40);

  text("Total number of elements: " + numbers.length, 10, 80);

  text("Total number of elements - 1 = the last index: " + (numbers.length - 1), 10, 100);

  text("The last element: " + numbers[numbers.length - 1], 10, 120);

​

  text(numbers[2], 10, 200); // 2

  numbers[2] = 100;

  text(numbers[2], 10, 220); // 100

  text(numbers[1] + numbers[3], 10, 260); // 3 + 7 = 10

  noLoop();

}