# Itertools.Permutations() in Python | HackerRank Solution

Hello coders, today we are going to solve Itertools.Permutations() in Python Hacker Rank Solution.

Contents

## Objective

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')]```

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)
The string contains only UPPERCASE characters.

## 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```

Explanation

All possible size 2 permutations of the string “HACK” are printed in lexicographic sorted order.

## Solution – Itertools.Permutations() in Python – Hacker Rank Solution

### Python 3

```from itertools import permutations
string, length = input().split()
output = ["".join(i) for i in permutations(string,int(length))]
output.sort()
print("\n".join(output))```

Disclaimer: The above Problem (Itertools.Permutations() in Python) is generated by Hacker Rank but the Solution is provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.

### 1 thought on “Itertools.Permutations() in Python | HackerRank Solution”

1. There is a wrong in this code because the output obtained in here does not match with required output of the hacker rank