The Shortest Way to Fill the Arraylist
What Is the Shortest Way to Fill the Arraylist? Something Like: Arraylist List = New Arraylist(); List. Add({1,10,1,1}); List. Add({2,11,1,1}); or: Arraylist...
What is the shortest way to fill the ArrayList? Something like:
ArrayList<Integer[]> list = new ArrayList<Integer[]>();
list.add({1,10,1,1});
list.add({2,11,1,1});
Or:
ArrayList<Integer[]> list = ({1,10,1,1},{2,11,1,1});
4 Answers
How about this shortcut:
List<int[]> list = Arrays.asList( new int[][]{{1,10,1,1}, {2,11,1,1}} );
Using guava
Lists.newArrayList(new int[]{1,2,3}, new int[]{2,4,5}, new int[]{5,6,7});
To fix your first attempt:
ArrayList<Integer[]> list = new ArrayList<Integer[]>();
list.add(new Integer[]{1,10,1,1});
list.add(new Integer[]{2,11,1,1});
List<Integer[]> list = new ArrayList<Integer[]>();
list.add(new Integer[] { 1, 10, 1, 1 });
list.add(new Integer[] { 2, 11, 1, 1 });
Or here is a one-liner:
List<Integer[]> list = Arrays.asList(new Integer[] { 1, 10, 1, 1 }, new Integer[] { 2, 11, 1, 1 });
Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.
