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  1. Prepare
  2. Python
  3. Itertools
  4. itertools.combinations()
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itertools.combinations()

  • pythonista_c
     + 0 comments

    Might be lengthy but easy to understand for beginners. Hope this helps:

    from itertools import combinations

S = input().split() # Splits input into a list using space from input as separator
string = sorted(S[0])
size = int(S[1])

# Iterating combination size from 1 up to number specified in k
i = 1
while i <= size:
    comb = list(combinations(string, i))
    i += 1

    for item in comb:
        print(''.join(item).replace(" ", ""))