10/19/2025 practice (Leetcode, TypeScript): solved 4 easy problems and 4 medium problems in TypeScript Leetcode These are the leetcode problems I solved today: Unique Number of Occurrences Find the Difference of Two Arrays Find the Highest Altitude Find Pivot Index Maximum Number of Vowels in a Substring of Given Length Max Consecutive Ones III Longest Subarray of 1s After Deleting One Element Determine if Two Strings Are Close