from random import choices
scope = 50
amount = 100
source = choices(range(scope),k=amount)
counter = [0]*scope
for x in source:
counter[x] += 1
for i in range(1, scope):
counter[i] += counter[i-1]
destination = [0]*amount
for x in reversed(source):
# index = count-1
destination[counter[x]-1] = x #
counter[x] -= 1
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