I created a set:
Set<Integer> bombo1 = new LinkedHashSet<>();
And I want to mess up the whole. The problem is that I do not know how. I've tried with:
Collections.shuffle(bombo1);
but only serves to sort lists in the List interface. Let's see if they can help me. Thanks !!
If you want to use Collections.suffle I understand that you want to do this:
Collections.suffle () : method used to randomly permute the list specified using a default font of randomness.
To randomly order a Set , you can do it this way, you can add the values of Set to ArrayList and in this way use the method Collections.suffle ()
//Crea un ArrayList a partir del Set conteniendo los valores originales.
List<Integer> shuffleList = new ArrayList<Integer>(bombo1);
//Permuta aleatoriamente la lista.
Collections.shuffle(shuffleList);
//Crea un nuevo Set en donde se almacenarán los datos ordenados aleatoriamente.
Set<Integer> shuffledSet = new LinkedHashSet<Integer>();
//Agrega los valores ordenados alatoriamente a un nuevo Set.
shuffledSet.addAll(shuffleMe);
In this way shuffledSet will contain the randomly sorted values.
I add a example online :
// LinkedHashSet de elementos tipo Integer.
Set<Integer> lhset = new LinkedHashSet<Integer>();
// Agrega elementos.
lhset.add(12);
lhset.add(1);
lhset.add(57);
lhset.add(0);
lhset.add(9);
lhset.add(34);
System.out.println("Set original: " + lhset);
//Crea un ArrayList a partir del Set conteniendo los valores originales.
List<Integer> shuffleMe = new ArrayList<Integer>(lhset);
//Permuta aleatoriamente la lista.
Collections.shuffle(shuffleMe);
//Crea un nuevo Set en donde se almacenarán los datos ordenados aleatoriamente.
Set<Integer> shuffledSet = new LinkedHashSet<Integer>();
//Agrega los valores ordenados alatoriamente a un nuevo Set.
shuffledSet.addAll(shuffleMe);
System.out.println("Set desordenado : " + shuffledSet);
Exit:
Set original: [12, 1, 57, 0, 9, 34]
Set desordenado : [0, 1, 34, 12, 9, 57]