Discussion on: JavaScript Challenge 3: Remove Zeroes

[Matt Ellen]

function put0AtTheBack(arr)
{
  let zeroIndex = -1;
  for(let i = 0; i < arr.length; i++)
  {
    let item = arr[i];
    if(item !== '0' && item !== 0 && zeroIndex !== -1)
    {
        let tmp = arr[i];
        arr[i] = arr[zeroIndex];
        arr[zeroIndex] = tmp;
        zeroIndex++;
    }

    if((item === '0' || item === 0) && zeroIndex === -1)
    {
        zeroIndex = i;
    }
  }
}