def countingSort(arr):

  max_val = max(arr)

  count = [0] * (max_val + 1)

​

  while len(arr) > 0:

    num = arr.pop(0)

    count[num] += 1

​

  for i in range(len(count)):

    while count[i] > 0:

      arr.append(i)

      count[i] -= 1

​

  return arr

​

mylist = [4, 2, 2, 6, 3, 3, 1, 6, 5, 2, 3]

mysortedlist = countingSort(mylist)

print(mysortedlist)

​