1. You are given a word (may have one character repeat more than once).
2. You are given an integer k.
3. You are required to generate and print all k length words (of distinct chars) by using chars 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 acb adb aeb acd ace adc aec ade aed bac bad bae cab dab eab cad cae dac eac dae ead bca bda bea cba dba eba cda cea dca eca dea eda bcd bce bdc bec bde bed cbd cbe dbc ebc dbe ebd cdb ceb dcb ecb deb edb cde ced dce ecd dec edc