1.KFrequentlyMentionedWords

K Frequently Mentioned Words

Question: Given a list of reviews, keywords & an integer k, return a list of top K most frequently appearing keywords in the reviews based on the following conditions:

• The comparison of strings is case-insensitive.
• Multiple occurances of a keyword in a review should be considred as a single mention.
• If keywords are mentioned an equal number of times in reviews, sort alphabetically.