@@ -1,7 +1,7 @@
 
 papel:
    15,31,39,44,59,73,75,90,97,103,114,117,
-    126,137,140,146,156,166,181,187,197,209,218,224,237
+    126,137,140,146,156,166,181,187,197,209,218,224,242
 
 
 
 
@@ -11,12 +11,13 @@ public static void main(String[] args) {
         // ArrayList metodos
 		// 
 		ArrayList<Integer> numeros = new ArrayList<>(List.of(3,4,5,6,7));
+		
 		ArrayList<Integer> remover = new ArrayList<>(List.of(5,6));
 
         System.out.println(numeros);
 
         numeros.removeAll(remover);
-                
+        
         System.out.println(numeros);
 
 
 
@@ -12,14 +12,12 @@ public static void main(String[] args) {
         // ArrayList metodos
 		// 
 		ArrayList<Integer> numeros = new ArrayList<>(List.of(3,4,5,6,7));
-		
-		
+				
         System.out.println(numeros);
 
         numeros.removeIf( cada -> cada % 2 == 1 );
 
         System.out.println(numeros);
-				
 
 		System.out.println("--------------------------");
 
 
@@ -12,14 +12,12 @@ public static void main(String[] args) {
 		// 
 		ArrayList<Integer> numeros = new ArrayList<>(List.of(3,4,5,6,7));
 
-		
         System.out.println(numeros);
 
         numeros.replaceAll( cada -> cada + 1 );
 
         System.out.println(numeros);
 
-
 		System.out.println("--------------------------");
 
 		// Your code here
 
@@ -21,7 +21,6 @@ public static void main(String[] args) {
 
         System.out.println(numeros1);
 
-
 		System.out.println("--------------------------");
 
 		// Your code here
 
@@ -16,7 +16,6 @@ public static void main(String[] args) {
 		List<Integer> a = Arrays.asList(1, 2, 3, 4, 5, 6);
         List<Integer> b = Arrays.asList(3, 4, 7, 8);
 
-        
         System.out.println(a.getClass().getSimpleName());
         System.out.println(b.getClass().getSimpleName()); 
 
 
@@ -1,13 +1,24 @@
 package programa;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Tut001 {
 
 
 	public static void main(String[] args) {
 		long startTime = System.nanoTime();
 
 
-        
+        ArrayList<Integer> numeros1 = new ArrayList<>(List.of(3,4,5,6,7));
+		
+		ArrayList<Integer> numeros2 = new ArrayList<>(List.of(2,4,5,8,9));
+		
+		ArrayList<Integer> comum = new ArrayList<Integer>(numeros1.retainAll(numeros2));
+		
+		
+		
+		
 
 		System.out.println("--------------------------");