# itertools.combinations_with_replacement() in python HackerRank Solution

#### ByBrokenprogrammers

Dec 9, 2022

Hello Programmers, In this post, you will know how to solve the itertools.combinations_with_replacement() in python HackerRank Solution. This problem is a part of the HackerRank Python Programming Series.

One more thing to add, donâ€™t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

## itertools.combinations_with_replacement() in python Hacker Rank Solution

### Problem

itertools.combinations_with_replacement(iterable, r)
This tool returns r length subsequences of elements from the input iterable allowing individual elements to be repeated more than once.
Combinations are emitted in lexicographic sorted order. So, if the input iterable is sorted, the combination tuples will be produced in sorted order.
Sample Code :

```>>> from itertools import combinations_with_replacement
>>>
>>> print list(combinations_with_replacement('12345',2))
[('1', '1'), ('1', '2'), ('1', '3'), ('1', '4'), ('1', '5'), ('2', '2'), ('2', '3'), ('2', '4'), ('2', '5'), ('3', '3'), ('3', '4'), ('3', '5'), ('4', '4'), ('4', '5'), ('5', '5')]
>>>
>>> A = [1,1,3,3,3]
>>> print list(combinations(A,2))
[(1, 1), (1, 3), (1, 3), (1, 3), (1, 3), (1, 3), (1, 3), (3, 3), (3, 3), (3, 3)]
```

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

#### Input Format :

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

#### Constraints :

• 0 < k <= len(s)
• The string contains only UPPERCASE characters.

#### Output Format :

Print the combinations with their replacements of string S on separate lines.

#### Sample Input :

```HACK 2
```

```AA
AC
AH
AK
CC
CH
CK
HH
HK
KK```

### itertools.combinations_with_replacement() in python Hacker Rank Solution

```# itertools.combinations_with_replacement() in python - Hacker Rank Solution
# Python 3
# Enter your code here. Read input from STDIN. Print output to STDOUT
# itertools.combinations_with_replacement() in python - Hacker Rank Solution START
from itertools import combinations_with_replacement
io = input().split();
char = sorted(io[0]);
N = int(io[1]);
for i in combinations_with_replacement(char,N):
print(''.join(i));```

Disclaimer: The above Problem (itertools.combinations_with_replacement() in python) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.