/* Instructions here:
You are given a variable named zipcode_list that has been defined and refers to a list of postal codes.
Write some code that assigns True to duplicates if any two elements in the list have the same value, but that otherwise assigns False to duplicates . You may, if you wish, use two other variables, j and k .
Use only j , k , zipcode_list , and duplicates */
k = 0
j = 0
duplicates = False
while k < len(zipcode_list) - 1:
while j <= len(zipcode_list) - 1:
if zipcode_list [k] == zipcode_list [j]:
duplicates = True
break
j += 1
k += 1