I ran into this challenge described in C/C++ as follows:
#define MATRIX_SIZE 3
#if MATRIX_SIZE == 3
int matrix[3][3] = {
{ 11, 12, 13 },
{ 21, 22, 23 },
{ 31, 32, 33 }
};
#elif MATRIX_SIZE == 4
int matrix[4][4] = {
{ 11, 12, 13, 14 },
{ 21, 22, 23, 24 },
{ 31, 32, 33, 34 },
{ 41, 42, 43, 44 }
};
#else
int matrix[6][6] = {
{ 11, 12, 13, 14, 15, 16 },
{ 21, 22, 23, 24, 25, 26 },
{ 31, 32, 33, 34, 35, 36 },
{ 41, 42, 43, 44, 45, 46 },
{ 51, 52, 53, 54, 55, 56 },
{ 61, 62, 63, 64, 65, 66 }
};
#endif
Given a rectangular matrix of integers [editorial: could be any type of data if one uses generics; I will skip that part] display the values in a spiral fashion. For example, the first matrix[3][3] would produce: 11 12 13 23 33 32 31 11 22. Continue reading “Spiral Matrix”