quick sort iterative

function quickSortIterative(arr) {
  let sorted = [],
      stacked =[arr];
  
  while (stacked.length) {
    let temp = stacked.pop(),
        tempLen = temp.length;
    
    if (tempLen === 1) {
      sorted.push(temp[0]);
      continue;
    }
    
    let pivot = temp[0],
        left = [],
        right = [];

    for (let i =1; i < tempLen; i++) {
      if(temp[i] < pivot){
        left.push(temp[i]);
      }else {
        right.push(temp[i]);
      }
    }
    
    left.push(pivot);
    
    if (right.length) {
      stacked.push(right);
    }
    if (left.length) {
      stacked.push(left);
    }
  }
  return sorted;
}

console.log(quickSortIterative([8,4,6,2,1,9,5,5,4,3,4,3]));