Answered: In loop functions.py, define a function…

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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In loop functions.py, define a function named permutations that takes two paramters, n and r, in that order. This function returns the number of different permutations of length r from set of size n. Essentially to calculate these permutations, the function should compute the product

(n - r+1)*(n-r+2)*(n-r+3)*...*(n-2)*(n-1) or n!/(n-r)!.

No if statements or built in math functions should be used. For or while loops are best reccomended.

In loop_functions.py, define a function named permutations that takes two parameters,
n and r, in that order. This function returns the number of different permutations of length
r from a set of size n. Essentially, to calculate these permutations, the function should
compute the product (n-r+1)*(n-r+2)*(n-r+3)*...*(n-2)*(n-1)*n or n!/(n-r)!.

Before implementing this function, determine whether you need a for loop or a while loc
You should not use any if statements or built-in funtions (e.g., math.factorial) in this

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