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15 lines
425 B
Python

def counting_sort(array1, max_val):
m = max_val + 1
count = [0] * m
for a in array1:
# count occurences
count[a] += 1
i = 0
for a in range(m):
for c in range(count[a]):
array1[i] = a
i += 1
return array1
print(counting_sort( [1, 2, 7, 3, 2, 1, 4, 2, 3, 2, 1], 7 ))