itertools.permutations() in Python – HackerRank Solution

itertools permutation in python Hacker rank solution
itertools.permutations() in Python – HackerRank Solution

itertools.permutations(iterable[, r])
This tool returns successive r length permutations of elements in an iterable.
If r is not specified or is None, then r defaults to the length of the iterable, and all possible full length permutations are generated.
Permutations are printed in a lexicographic sorted order. So, if the input iterable is sorted, the permutation tuples will be produced in a sorted order.
Sample Code :

>>> from itertools import permutations
>>> print permutations(['1','2','3'])
<itertools.permutations object at 0x02A45210>
>>>
>>> print list(permutations(['1','2','3']))
[('1', '2', '3'), ('1', '3', '2'), ('2', '1', '3'), ('2', '3', '1'), ('3', '1', '2'), ('3', '2', '1')]
>>>
>>> print list(permutations(['1','2','3'],2))
[('1', '2'), ('1', '3'), ('2', '1'), ('2', '3'), ('3', '1'), ('3', '2')]
>>>
>>> print list(permutations('abc',3))
[('a', 'b', 'c'), ('a', 'c', 'b'), ('b', 'a', 'c'), ('b', 'c', 'a'), ('c', 'a', 'b'), ('c', 'b', 'a')]

Task :

You are given a string S.
Your task is to print all possible permutations of size k of the string in lexicographic sorted order.


Input Format :

A single line containing the space separated string S and the integer value k.

Constraints :

  • 0 < k <= len(S)

Output Format :

Print the permutations of the string S on separate lines.


Sample Input :

HACK 2

Sample Output :

AC
AH
AK
CA
CH
CK
HA
HC
HK
KA
KC
KH

itertools.permutations() in Python – HackerRank Solution

# itertools.permutations() in Python - Hacker Rank Solution
# Python 3
# itertools.permutations() in Python - Hacker Rank Solution START
from itertools import permutations
s,k = input().split()
words = list(permutations(s,int(k)))
words = sorted(words, reverse=False)
for word in words:
    print(*word,sep='')
# itertools.permutations() in Python - Hacker Rank Solution END

Disclaimer: The above Problem (itertools.permutations() in Python) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

Leave a Comment