q11.java

public class q11 {
	
	public static long maxValue;
	public static long horizontalValue;
	public static long verticalValue;
	public static long diagonalValue;
	public static long diagonalValue2;
	public static int[][] dataArray;

	public static long max(long a, long b, long c, long d, long e){
		a = a > b? a : b;
		a = a > c? a : c;
		a = a > d? a : d;
		a = a > e? a : e;
		return a;
	}
	
	public static long calculateDiagonal(int row, int column){
		try{
			return dataArray[row][column] * dataArray[row + 1][column + 1] * dataArray[row + 2][column + 2] * dataArray[row + 3][column + 3] ;
		}catch(IndexOutOfBoundsException e){
			return 0;
		}
	}
	
	public static long calculateDiagonal2(int row, int column){
		try{
			return dataArray[row][column] * dataArray[row + 1][column - 1] * dataArray[row + 2][column - 2] * dataArray[row + 3][column - 3] ;
		}catch(IndexOutOfBoundsException e){
			return 0;
		}
	}
	
	public static long calculateHorizontal(int row, int column){
		try{
			return dataArray[row][column] * dataArray[row][column + 1] * dataArray[row][column + 2] * dataArray[row][column + 3];

		}catch(IndexOutOfBoundsException e){
			return 0;
		}
	}
	public static long calculateVertical(int row, int column){
		try{
			return dataArray[row][column] * dataArray[row + 1][column] * dataArray[row + 2][column] * dataArray[row + 3][column];
		}catch(IndexOutOfBoundsException e){
			return 0;
		}
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String data = "08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08"+ "\n"+
					"49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48 04 56 62 00"+"\n"+
					"81 49 31 73 55 79 14 29 93 71 40 67 53 88 30 03 49 13 36 65"+"\n"+
					"52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91"+"\n"+
					"22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80"+"\n"+
					"24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50"+"\n"+
					"32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70"+"\n"+
					"67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21"+"\n"+
					"24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72"+"\n"+
					"21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95"+"\n"+
					"78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92"+"\n"+
					"16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57"+"\n"+
					"86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58"+"\n"+
					"19 80 81 68 05 94 47 69 28 73 92 13 86 52 17 77 04 89 55 40"+"\n"+
					"04 52 08 83 97 35 99 16 07 97 57 32 16 26 26 79 33 27 98 66"+"\n"+
					"88 36 68 87 57 62 20 72 03 46 33 67 46 55 12 32 63 93 53 69"+"\n"+
					"04 42 16 73 38 25 39 11 24 94 72 18 08 46 29 32 40 62 76 36"+"\n"+
					"20 69 36 41 72 30 23 88 34 62 99 69 82 67 59 85 74 04 36 16"+"\n"+
					"20 73 35 29 78 31 90 01 74 31 49 71 48 86 81 16 23 57 05 54"+"\n"+
					"01 70 54 71 83 51 54 69 16 92 33 48 61 43 52 01 89 19 67 48";
		
		String[] buffer = data.split("\n");
		System.out.println(buffer.length);
		dataArray = new int[20][20];
		maxValue = 0;
		
		for(int i = 0; i < 20; ++i){
			String line = buffer[i];
			String[] line2 = line.split(" ");
			for(int j = 0; j < 20; ++j){
				dataArray[i][j] = Integer.valueOf(line2[j]);
			}
		}
		for(int i = 0; i < 20; ++i){
			for(int j = 0; j < 20; ++j){
				horizontalValue = calculateHorizontal(i,j);
				verticalValue = calculateVertical(i,j);
				diagonalValue = calculateDiagonal(i,j);
				diagonalValue2 = calculateDiagonal2(i,j);
				maxValue = max(maxValue, horizontalValue, verticalValue, diagonalValue, diagonalValue2);

				System.out.print("the current index is:");
				System.out.print(i);
				System.out.print(" ");
				System.out.print(j);
				System.out.print(" ");
				System.out.println(maxValue);
			}
		}
		System.out.println(maxValue);
	}

}