Python/sorts/stooge_sort.py
Charitoc 2375bfbee5 Adding stooge sort (#1206)
* Adding stooge sort

* Updated doctest

* Just added underscore in the name
2019-09-26 17:19:01 +02:00

35 lines
734 B
Python

def stooge_sort(arr):
"""
>>> arr = [2, 4, 5, 3, 1]
>>> stooge_sort(arr)
>>> print(arr)
[1, 2, 3, 4, 5]
"""
stooge(arr,0,len(arr)-1)
def stooge(arr, i, h):
if i >= h:
return
# If first element is smaller than the last then swap them
if arr[i]>arr[h]:
arr[i], arr[h] = arr[h], arr[i]
# If there are more than 2 elements in the array
if h-i+1 > 2:
t = (int)((h-i+1)/3)
# Recursively sort first 2/3 elements
stooge(arr, i, (h-t))
# Recursively sort last 2/3 elements
stooge(arr, i+t, (h))
# Recursively sort first 2/3 elements
stooge(arr, i, (h-t))