1. You are given a word (may have one character repeat more than once).
2. You are given an integer k.
2. You are required to generate and print all ways you can select k distinct characters out of the
word.
Note -> Use the code snippet and follow the algorithm discussed in question video. The judge can't
force you but the intention is to teach a concept. Play in spirit of the question.
Input Format
Input is managed for you
Output Format
Check the sample ouput and question video.
Constraints
0 < str.length() < 15 0 < k <= str.length()
Notice
Try First, Check Solution later
1. You should first read the question and watch the question video.2. Think of a solution approach, then try and submit the question on editor tab.3. We strongly advise you to watch the solution video for prescribed approach.Example
Input
aabbbccdde 3
Output
abc abd abe acd ace ade bcd bce bde cde