Given the following function header: def longest_chain(lst: list[int]) -> int: Given a list of integers, return the length of the longest chain of 1's that start from the beginning. Precondition: 1st is non-empty which one of the cases below is the least useful to check? Select the best answer.

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A: - We need to solve the number list problem in python.

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A: Code of the given program-

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A: The solution for the above given question is given below:

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A: Here is the python code of the above problem. See below steps.

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A: python used to answer this question

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Q: Given the following function header: def longest_chain(1st: list[int]) -> int: Given a list of…

A: Below is the answer with explanation:

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Q: given input word, return the list of abbreviations. ex) word => ['word', 'wor1', 'wo1d', 'wo2',…

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A: Answer is given below

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A: Python: Python is a high level, general purpose programming language. It was developed by Guido Van…

Q: given input word, return the list of abbreviations. ex) word => ['word', 'wor1', 'wo1d', 'wo2',…

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A: THE CODE HAS BEEN WRITTEN IN STEP 2. I HOPE YOU FIND THIS HELPFUL.

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A: Given: The two-dimensional lists m1 and m2 are identical if they have the same contents. Write a…

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A: Read the number of test cases t.Repeat t times:Initialize head and tail of the linked list as…