Are They Anagrams? Let's Find Out
The Anagram Enigma – Sorting Out the Truth with Java String problems are often deceptively simple. Take this one: Are two strings just jumbled versions of each other? That’s it. But behind the scenes? There’s plenty to explore. Today, we’re breaking down Leetcode 242: Valid Anagram – and serving up all the Java solutions from basic to Unicode-ready. ⚡ The Best Data Structure (and Why!) For basic lowercase inputs: a frequency array ( int[26] ) is fastest and most space-efficient. For Unicode: HashMap<Character, Integer> lets us handle extended character sets. 🔍 Different Approaches 1. Sort and Compare If two strings are anagrams, their sorted versions will be identical. import java.util.Arrays; public class Solution { public boolean isAnagram (String s, String t) { if (s.length() != t.length()) return false ; char [] sArr = s.toCharArray(); char [] tArr = t.toCharArray(); Arrays.sort(sArr); Arrays.sort(tArr); ...