The python code below to find the number of r-permutations when repetition is not allowed and r-combinations when repetition is not allowed of a set with n elements. Write the algorithm and draw the flowchart based on the code.   import itertools  from itertools import combinations from itertools import permutations def rSubset(arr,r):     return list(combinations(arr,r)) def rPermutations(arr,r):     return list(permutations(arr,r)) if __name__=="__main__":     lst=[]     n=int(input("Enter n :"))     for i in range (0,n):         ele=int(input("n elements :"))         lst.append(ele)     print (lst)     r=int(input("Enter r : "))          combinationsl=list(itertools.combinations(lst,r))     print("Combinations : ",combinationsl)     permutationsl=list(itertools.permutations(lst,r))     print("Permutations : ",permutationsl)

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
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The python code below to find the number of r-permutations when repetition is not allowed and r-combinations when repetition is not allowed of a set with n elements. Write the algorithm and draw the flowchart based on the code.

 

import itertools 
from itertools import combinations
from itertools import permutations

def rSubset(arr,r):
    return list(combinations(arr,r))

def rPermutations(arr,r):
    return list(permutations(arr,r))


if __name__=="__main__":
    lst=[]
    n=int(input("Enter n :"))
    for i in range (0,n):
        ele=int(input("n elements :"))
        lst.append(ele)
    print (lst)
    r=int(input("Enter r : "))
    
    combinationsl=list(itertools.combinations(lst,r))
    print("Combinations : ",combinationsl)
    permutationsl=list(itertools.permutations(lst,r))
    print("Permutations : ",permutationsl)
    

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