Given an array of ints, is it possible to choose a group of some of the ints, such that the group sums to the given target? This is a classic backtracking recursion problem. Once you understand the recursive backtracking strategy in this problem, you can use the same pattern for many problems to search a space of choices. Rather than looking at the whole array, our convention is to consider the part of the array starting at index start and continuing to the end of the array. The caller can specify the whole array simply by passing start as 0. No loops are needed -- the recursive calls progress down the array. Example: Input: groupSum(0, [2, 4, 8], 10) Output: True Input: groupSum(0, [2, 4, 8], 14) Output: True Input: groupSum(0, [2, 4, 8], 9) Output: False

Given an array of ints, is it possible to choose a group of some of the ints, such that the group sums to the given target? This is a classic backtracking recursion problem. Once you understand the recursive backtracking strategy in this problem, you can use the same pattern for many problems to search a space of choices. Rather than looking at the whole array, our convention is to consider the part of the array starting at index start and continuing to the end of the array. The caller can specify the whole array simply by passing start as 0. No loops are needed -- the recursive calls progress down the array. Example: Input: groupSum(0, [2, 4, 8], 10) Output: True Input: groupSum(0, [2, 4, 8], 14) Output: True Input: groupSum(0, [2, 4, 8], 9) Output: False

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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A: The python code for the above given question is given below:

Question

Please use pythons to solve the recursive problem. Do not use any libraries and try to use basic functions if possible.

Given an array of ints, is it possible to choose a group of some of the ints, such that the group
sums to the given target? This is a classic backtracking recursion problem. Once you
understand the recursive backtracking strategy in this problem, you can use the same pattern
for many problems to search a space of choices. Rather than looking at the whole array, our
convention is to consider the part of the array starting at index start and continuing to the end of
the array. The caller can specify the whole array simply by passing start as 0. No loops are
needed -- the recursive calls progress down the array.
Example:
Input: groupSum(0, [2, 4, 8], 10)
Output: True
Input: groupSum(0, [2, 4, 8], 14)
Output: True
Input: groupSum(0, [2, 4, 8], 9)
Output: False

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