Find Common Keys in Product Recommendations

In a product recommendation system, two key-value pairs, predictions1 and predictions2, represent the recommended products shown to a user. The keys are the product names, and the values are the recommendation scores. Given two lists of product keys, pred1_keys and pred2_keys, find the common keys present in both recommendation lists and return them sorted alphabetically. Input: pred1_keys: a list of strings representing keys from the first recommendation list. pred2_keys: a list of strings representing keys from the second recommendation list. Output: A list of strings representing the common keys in both lists. Example: Input: pred1_keys = ["hello", "world", "hi"], pred2_keys = ["hi", "there"] Output: ["hi"] Constraints: 1 <= pred1_keys.length, pred2_keys.length <= 1000 pred1_keys[i] and pred2_keys[i] consist of lowercase letters and are unique. Example Input hello world hi hi there