Given a two dimensional array of characters, provide an implementation
which would print out the characters in the array in a spiral manner.

Question

Given a two dimensional array of characters, provide an implementation
which would print out the characters in the array in a spiral manner.

maddy · Accepted Answer

void printSpiralArray() {
    int a[5][5] = { {1,2,3,4,5},
                    {6,7,8,9,10},
                    {11,12,13,14,15},
                    {16,17,18,19,20},
                    {21,22,23,24,25}
                  };
    int i = 0, j = 0, k = 0;
    printf("Original array
");

    for (i = 0; i = 0) {
                printf("%d ", *(a[i] + k));
                k--;
            }
            printf("
");
        } else {
            for (j = 0; j < 5; j++) {
                printf("%d ", a[i][j]);
            }
            printf("
");
            k = j - 1;
        }
    }   
}

neal · Answer

public class TwoDimArraySpiral {

	public static void PrintInSpiral(int[][] num, int length) {
		int size = length-1;

		for (int i = 0; i = i; k--){
				System.out.println(num[size-i][k]);
			}
			for (int j = size - 1 - i; j > i; j--){
				System.out.println(num[j][i]);
			}
		}
	}

	public static void main(String[] args) {

		int[][] this2DArray = { 
				{  1,  2,  3,  4,  5,  6 }, 
				{  7,  8,  9, 10, 11, 12 },
				{ 13, 14, 15, 16, 17, 18 }, 
				{ 19, 20, 21, 22, 23, 24 },
				{ 25, 26, 27, 28, 29, 30 }, 
				{ 31, 32, 33, 34, 35, 36 },

		};
		System.out.println(this2DArray.length);

		PrintInSpiral(this2DArray, this2DArray.length);
	}
}

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