63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#define MAX(a,b) (((a)>(b))?(a):(b))
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int orangesRotting(int** grid, int gridSize, int* gridColSize) {
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int *grid2 = malloc(sizeof(int) * gridSize * *gridColSize);
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memcpy(grid2, *grid, sizeof(int) * gridSize * *gridColSize);
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printf("%d %d\n", gridSize, *gridColSize);
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for (int minutes = 0;; minutes++) {
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for (int x = 0; x < gridSize; x++) {
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for (int y = 0; y < *gridColSize; y++) {
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printf("%d ", (*grid)[x * gridSize + y]);
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if ( (*grid)[x * gridSize + y] != 2 ) continue;
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for (int dx = MAX(x-1,0); dx < MIN(x+2, gridSize); dx++)
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if ((*grid)[dx * gridSize + y] == 1) (grid2)[dx * gridSize + y] = 2;
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for (int dy = MAX(y-1, 0); dy < MIN(y+2, *gridColSize); dy++)
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if ((*grid)[x * gridSize + dy] == 1) (grid2)[x * gridSize + dy] = 2;
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}
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printf("\n");
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}
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int finished = 1;
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int same = 1;
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for (size_t i = 0; i < gridSize * *gridColSize; i++) {
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if ((*grid)[i] == 1) finished = 0;
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same &= (*grid)[i] == grid2[i];
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}
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if (finished) return minutes;
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if (same) return -1;
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int *temp = *grid;
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*grid = grid2;
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grid2 = temp;
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memcpy(grid2, *grid, sizeof(int) * gridSize * *gridColSize);
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}
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return 0;
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}
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int main() {
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int *test1 = malloc(sizeof(int) * 3 * 3);
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int test[] = {2,1,1,1,1,0,0,1,1};
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memcpy(test1, test, sizeof(int) * 3 * 3);
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int gridColSize = 3;
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int result = orangesRotting(&test1, 3, &gridColSize);
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printf("is %d expeceted %d\n", result, 4);
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assert(result == 4);
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}
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