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How to handle Extra Spaces in "Reverse Words"? 🤯 Problem: Given " hello world ", return "world hello". If you use s.split(" "), you will get empty strings in your array because of the extra spaces. 🐞 The Java Trick: Use Regular Expressions (Regex)! String[] words = s.trim().split("\\s+"); 1️⃣ .trim() removes leading/trailing spaces. 2️⃣ \\s+ means "one or more spaces". This groups multiple spaces into one split point. Algorithm: Split the string using the Regex. Use a StringBuilder. Iterate the array from Last to First. Append words with a single space. 👇 Save this Regex trick for your next Online Assessment! #leetcode #stringmanipulation #java #regex #codinginterview #dsa #softwareengineer #btech #codingtips#ytshorts #btech #codinginterview #faang #interview #short #viral #viralshort #yt_shorts