refactor: Update AnagramSnippet.java (#186)

* Update AnagramSnippet.java

Moved the array declaration after the if statement to minimise the unnecessary array creation in case the function returns from the if statement.

* Updated the Readme file for the related changes

---------

Co-authored-by: abd <abdullaha@phelix.ai>

README.md

@@ -823,11 +823,13 @@ public static double calculateMatchRating(double firstPlayerRating, double secon
   public boolean isAnagram(String s1, String s2) { 
     var l1 = s1.length();
     var l2 = s2.length();
-    var arr1 = new int[256];
-    var arr2 = new int[256];
+
     if (l1 != l2) {
       return false;
     }
+
+    var arr1 = new int[256];
+    var arr2 = new int[256];
 
     for (var i = 0; i < l1; i++) {
       arr1[s1.charAt(i)]++;

src/main/java/string/AnagramSnippet.java

@@ -41,11 +41,14 @@ public class AnagramSnippet {
   public static boolean isAnagram(String s1, String s2) {
     var l1 = s1.length();
     var l2 = s2.length();
-    var arr1 = new int[256];
-    var arr2 = new int[256];
+
     if (l1 != l2) {
       return false;
     }
+
+    var arr1 = new int[256];
+    var arr2 = new int[256];
+
     for (var i = 0; i < l1; i++) {
       arr1[s1.charAt(i)]++;
       arr2[s2.charAt(i)]++;