Answered: def longest_chain(lst: List[int]) ->…

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.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Operations of Linked List

A linked lists are one of the most widely used and effective data structures, with applications in every programming language, including C, C++, Python, Java, and C#.

Question

LAB RESTRICTIONS, PLEASE READ:
Do not add any imports, the ones that you need will be given to you.
You may not use any dictionaries or dictionary methods.
Do not use try-except statements, you should be able to anticipate
or prevent any errors from happening at all!

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.
You MUST use a while loop for this, and are not allowed to use a for loop.
Hint: A good way to start is to define a stopping condition, and have a
variable that keeps track of how many 1's you've seen thus far, if any.
Precondition: <lst> will only contain the integers 1 and 0.
>>> longest_chain([1, 1, 0])
2
>>> longest_chain([0, 1, 1])
>>> longest_chain([1, 0, 1, 1])
1

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