/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
int[][] a1 = new int[2][3];
int[][] a2 = { {1,2}, {3,4}, {5,6} };
int[][] a3 = { {1}, {2,3}, null };
}
}
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[[0, 0, 0], [0, 0, 0]]
[[1, 2], [3, 4], [5, 6]]
[[1], [2, 3], null]