var arr = [0, 1, 0, 1, 0, 1, 0, 1];

​

let i = 0;

let j = arr.length - 1;

​

while(i < j)

  {

    let leftIndex = arr[i];

    let rightIndex = arr[j];

  }

​

if(leftIndex == 0)

   {

     i++

   }

​

if(rightIndex == 0)

  {

    j--

  }

​

if(leftIndex == 1 && rightIndex == 0)

  {

    arr[i] = rightIndex;

    arr[j] = leftIndex;

    i++

    j--

  }

​

for(let num = 0; num < arr.length; num++)

  {

    console.log(arr[num] + " ");

  }

​

​

​

function setup() 

{

  let canvas = noCanvas(480, 500);

}

​

function draw() 

{

  background(220);

}