# Python program to implement Pigeonhole Sort */
# source code : "https://en.wikibooks.org/wiki/
# Algorithm_Implementation/Sorting/Pigeonhole_sort"
def pigeonhole_sort(a):
# size of range of values in the list
# (ie, number of pigeonholes we need)
my_min = min(a)
my_max = max(a)
size = my_max - my_min + 1
# our list of pigeonholes
holes = [0] * size
# Populate the pigeonholes.
for x in a:
assert type(x) is int, "integers only please"
holes[x - my_min] += 1
# Put the elements back into the array in order.
i = 0
for count in range(size):
while holes[count] > 0:
holes[count] -= 1
a[i] = count + my_min
i += 1
a = [8, 3, 2, 7, 4, 6, 8]
print("Sorted order is : ", end =" ")
pigeonhole_sort(a)
for i in range(0, len(a)):
print(a[i], end =" ")