java">/*
 *     3   7
 *    2 4 6 8
 *   1	 5   9
 *   这类图形都可用2维数组
 */

public class PrintM {
	
	public static void main(String[] args) {
		int a[][] = new int[3][9];
		a[2][0] = 1;
		a[1][1] = 2;
		a[0][2] = 3;
		a[1][3] = 4;
		a[2][4] = 5;
		a[1][5] = 6;
		a[0][6] = 7;
		a[1][7] = 8;
		a[2][8] = 9;
		
		for(int i=0; i<3; i++){
			for(int j = 0; j<9; j++){
				if(a[i][j]==0){
					System.out.print(" ");
				}else{
					System.out.print(a[i][j]);
				}
			}
			System.out.println("");
		}
	}
}

如果数字多的话，可以用for循环进行输入，