Write a program, in Python, that checks if the last data item entered appears earlier in the list

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
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Write a program, in Python, that checks if the last data item entered appears earlier in the list. Please use 2 while loops and NO computer language of "break" or "len" or "true" anywhere in code.

Input: sequence of non-negative data, terminated by -1

Output: Answers - "Yes, the last data item appears earlier", "No, the last data item appears earlier", "No Data Provided"

Please: Do not compare the last data item entered with itself!

This is the hint given: once the value of the number in the last index is known, start at the beginning of the list and compare that number to each of the other values in the list, to find many times it appeared again. 

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