2899. Last Visited Integers

Given an integer array nums where nums[i] is either a positive integer or -1. We need to find for each -1 the respective positive integer, which we call the last visited integer. To achieve this goal, let's define two empty arrays: seen and ans. Start iterating from the beginning of the array nums. - If a positive integer is encountered, prepend it to the front of seen. - If -1 is encountered,