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/* Listing0410.java */ public class Listing0410 { public static void main(String[] args) { int[][] a = { {0}, {1,2}, {3,4,5}, {6,7,8,9} }; for (int i=0; i<a.length; ++i) { for (int j=0; j<a[i].length; ++j) { System.out.print(a[i][j]); } System.out.println(); } } }