text: function setup() {
    createCanvas(1200, 300);
    linkedList = new LinkedList();
    
    linkedList.append("Head");
    linkedList.append(42);
    linkedList.append(65);
    
    linkedList.prepend("New Head");
    linkedList.prepend("New² Head");
  
    linkedList.append("Tail");
  
    console.log("Contain 42 ?", linkedList.contains(42));
    // let oldHead = linkedList.popHead();
    // console.log(oldHead);
    
    // let oldTail = linkedList.popTail();
    // console.log(oldTail);
  }
  
  function draw() {
    background(220);
    linkedList.show();
  }
  