Fix compare() for subset check (S.A ⊆ T.A) (#4978)

src/main/java/com/thealgorithms/datastructures/crdt/GSet.java

@@ -50,7 +50,7 @@ public class GSet<T> {
      * @return true if the current G-Set is a subset of the other, false otherwise
      */
     public boolean compare(GSet<T> other) {
-        return elements.containsAll(other.elements);
+        return other.elements.containsAll(elements);
     }
 
     /**