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author | Haidong Ji | 2022-04-15 15:51:30 -0500 |
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committer | Haidong Ji | 2022-04-15 15:51:30 -0500 |
commit | 442a49ad5a48d417345959b903ae6a6d32d55759 (patch) | |
tree | c7127bb497e5e439018b1915e0136eec2c9cb124 /20_rot_matrix/rotate.c |
Excellent fundamentals and displine training, many tools and techniques
exercises: gdb, emacs, valgrind, git
Diffstat (limited to '20_rot_matrix/rotate.c')
-rw-r--r-- | 20_rot_matrix/rotate.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/20_rot_matrix/rotate.c b/20_rot_matrix/rotate.c new file mode 100644 index 0000000..79d7f3b --- /dev/null +++ b/20_rot_matrix/rotate.c @@ -0,0 +1,24 @@ +#include <stdio.h> +#include <stdlib.h> + +void rotate(char matrix[10][10]) { + int layer = 0; + char temp1; + char temp2; + char temp3; + + while (layer <= 10/2) { + for (int i = layer; i < 10 - 1 - layer; i++) { + temp1 = matrix[i][10-1-layer]; + temp2 = matrix[10-1-layer][10-1-i]; + temp3 = matrix[10-1-i][layer]; + + matrix[i][10-1-layer] = matrix[layer][i]; + matrix[10-1-layer][10-1-i] = temp1; + matrix[10-1-i][layer] = temp2; + matrix[layer][i] = temp3; + } + layer++; + } + +} |