I need an algorithmic help to convert an input Array object to ArrayList<List> object? [closed]

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I need an algorithmic help to convert an input array in Java having this content : {5,6,3,2,4,7}

To this format :
[[2, 3], [3, 4], [4, 5], [5, 6], [6, 7]].

Answer

List<Integer> arrayList = new ArrayList<>(Arrays.asList(5,6,3,2,4,7));
Collections.sort(arrayList);
System.out.println("Input:"+arrayList);
List<List<Integer>> list = new ArrayList<List<Integer>>();
list.add(0, new ArrayList<Integer>(Arrays.asList(arrayList.get(0),arrayList.get(1))));
list.add(1, new ArrayList<Integer>(Arrays.asList(arrayList.get(1),arrayList.get(2))));
list.add(2, new ArrayList<Integer>(Arrays.asList(arrayList.get(2),arrayList.get(3))));
list.add(3, new ArrayList<Integer>(Arrays.asList(arrayList.get(3),arrayList.get(4))));
list.add(4, new ArrayList<Integer>(Arrays.asList(arrayList.get(4),arrayList.get(5))));
System.out.println("Output:"+list);


Source: stackoverflow