// Daniel Shiffman

// http://natureofcode.com

​

// An array to keep track of how often random numbers are picked

​

let randomCounts = [];

let total = 20;

​

function setup() {

  createCanvas(640, 360);

  for (let i = 0; i < total; i++) {

    randomCounts[i] = 0;

  }

}

​

function draw() {

  background(255);

  let index = floor(random(total));

  randomCounts[index]++;

​

  // Draw a rectangle to graph results

  stroke(0);

  strokeWeight(2);

  fill(127);

  let w = width / randomCounts.length;

​

  for (let x = 0; x < randomCounts.length; x++) {

    rect(x * w, height - randomCounts[x], w - 1, randomCounts[x]);

    // So that each bar starts over

    if (randomCounts[x] > height) randomCounts[x] = 0;

  }

}