code: def comb_sort(arr):
      def swap(i, j):
          arr[i], arr[j] = arr[j], arr[i]
  
      n = len(arr)
      gap = n
      shrink = 1.3
      sorted = False
      while not sorted:
          gap = int(gap / shrink)
          if gap > 1:
              sorted = False
          else:
              gap = 1
              sorted = True
  
          i = 0
          while i + gap < n:
              if arr[i] > arr[i + gap]:
                  swap(i, i + gap)
                  sorted = False
              i = i + 1
      return arr
  
label_desc: Use image node_id 1 for calling a global function with example usage: comb_sort(arr) and returns: arr