Contoh Program Java Array Tangga

public class ArrayTangga{
    public static void main(String[]args){
        int [][]sel = new int[4][];
        int i,j;
        for(i =0;i<sel.length;i++)
            sel [i]= new int[i+1];
           
           for(i=0;i<sel.length;i++)
            for(j=0;j<sel[i].length;j++)
                sel[i][j]= i+j;
               
                //for(i=0;i<sel.length;i++){
                    //for(j=0; j<sel[i].length;j++)
                        //System.out.print(sel[i][j]+" ");
                      
                    System.out.println(" ");//pindah baris
                //}
            }
        }