Question: def frequency(s): unique = '' dups = '' for item in s: if item in unique: dups += item else: unique += item return unique

def frequency(s):

unique = ''

dups = ''

for item in s:

if item in unique:

dups += item

else: unique += item

return unique

print(frequency('amazing'))

amzing is the answer but how does this python code find it

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