Update LongestCommonPrefix.java

Fixed formatting

Author: TheDarkW3b

src/main/java/com/thealgorithms/strings/LongestCommonPrefix.java

@@ -4,15 +4,18 @@
 
 public final class LongestCommonPrefix {
     public String longestCommonPrefix(String[] strs) {
-        if(strs == null || strs.length == 0) return "";
+        if (strs == null || strs.length == 0) {
+            return "";
+        }
 
         Arrays.sort(strs);
         String shortest = strs[0];
         String longest = strs[strs.length - 1];
 
         int index = 0;
-        while(index < shortest.length() && index < longest.length() && shortest.charAt(index) == longest.charAt(index))
+        while (index < shortest.length() && index < longest.length() && shortest.charAt(index) == longest.charAt(index)) {
             index++;
+        }
 
         return shortest.substring(0, index);
     }