HackerRank itertools.combinations() solution in python |python question solution

This tool returns the  length subsequences of elements from the input iterable.

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
>>> 
>>> print list(combinations('12345',2))
[('1', '2'), ('1', '3'), ('1', '4'), ('1', '5'), ('2', '3'), ('2', '4'), ('2', '5'), ('3', '4'), ('3', '5'), ('4', '5')]
>>> 
>>> A = [1,1,3,3,3]
>>> print list(combinations(A,4))
[(1, 1, 3, 3), (1, 1, 3, 3), (1, 1, 3, 3), (1, 3, 3, 3), (1, 3, 3, 3)]

Task

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

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

Constraints

The string contains only UPPERCASE characters.

Print the different combinations of string  on separate lines.

HACK 2

A
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AH
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In this itertools.combinations() problem we need to develop a python program that can read an input line with a list and integer separated with space. and then we need to use the itertools module and combinations() function to print the iterable values on the output screen.

Problem solution in Python 2 programming.
from itertools import combinations

S,k = raw_input().split()
k = int(k)

for r in xrange(1,k+1):
    print 'n'.join(sorted(''.join(sorted(c)) for c in combinations(S,r)))

Problem solution in Python 3 programming.
# Enter your code here. Read input from STDIN. Print output to STDOUT
from itertools import combinations

s , n  = input().split()

for i in range(1, int(n)+1):
    for j in combinations(sorted(s), i):
        print(''.join(j))

Problem solution in pypy programming.
# Enter your code here. Read input from STDIN. Print output to STDOUT
from itertools import combinations
string_number = raw_input().split()
string = string_number[0]
number = map(int, string_number[1])

def Print(given_list):
    for elem in given_list:
        n = len(elem)
        elem_print = ""
        for i in range(0, n):     
            elem_print+=elem[i]
        print elem_print
    return

for i in range(1, number[0]+1):
    Print(list(combinations(sorted(string), i)))
# print list(combinations(string, number[0]))

Problem solution in pypy3 programming.
# Enter your code here. Read input from STDIN. Print output to STDOUT

import itertools

ll, m = input().split()

k = int(m)


for n in range(k):
    for i in itertools.combinations(sorted(ll), n+1):
        print("".join(i))