function bubbleSort(arr){
  var swap = true;
  while (swap){
  	swap = false;
  	for (var i = 0; i < arr.length; i++){
	    let temp = arr[i];
	    if (arr[i] > arr[i+1]){
	      arr[i] = arr[i+1];
	      arr[i+1] = temp;
		  swap = true;
	    }
  	}
  }
  return arr;
}