Unstructured course

solving the question using hashmap, java collections assuming that student knows everything

@nishantrocks1997_f40e121684ea6000 You can solve this question by hashmap also.If you haven’t done hashmap yet try to do it by other method or leave this question for a while.

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.