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authorBond_009 <bond.009@outlook.com>2022-12-01 22:30:22 +0100
committerBond_009 <bond.009@outlook.com>2022-12-01 22:30:22 +0100
commitbaf4910870a6e8999802b9a4a22eabd4142a34e3 (patch)
tree2d11443dc21e53bd0d99d015cf789937d6d95862 /11/part1.c
parent49d0c908f24b2c193c9deed1716fe36061ba26a1 (diff)
Move all Advent of Codes into one repo
Diffstat (limited to '11/part1.c')
-rw-r--r--11/part1.c123
1 files changed, 0 insertions, 123 deletions
diff --git a/11/part1.c b/11/part1.c
deleted file mode 100644
index 459befe..0000000
--- a/11/part1.c
+++ /dev/null
@@ -1,123 +0,0 @@
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <malloc.h>
-#include <string.h>
-
-#define MAX_INPUT_WIDTH 128
-#define MAX_INPUT_HEIGTH 128
-#define MAX_INPUT MAX_INPUT_WIDTH * MAX_INPUT_HEIGTH
-
-int count_char(const char *source, char search)
-{
- int oc = 0;
- do {
- oc += *source == search;
- } while (*++source);
-
- return oc;
-}
-
-void replace_char(char *destination, const char *source, char original, char replace)
-{
- do {
- if (*source == original) {
- *destination = replace;
- }
- else {
- *destination = *source;
- }
- } while (++destination && *++source);
- *destination = 0;
-}
-
-int sur_oc_seats(const char *source, size_t width, size_t height, size_t index_y, size_t index_x)
-{
- int num = 0;
- // Check 3 seats on the line above
- if (index_y > 0) {
- size_t x = index_x == 0 ? index_x : index_x - 1;
- size_t end_x = index_x < width - 1 ? index_x + 2 : index_x + 1;
- for (; x < end_x; x++) {
- num += source[(index_y - 1) * width + x] == '#';
- }
- }
-
- // Check sides
- if (index_x > 0) {
- num += source[index_y * width + index_x - 1] == '#';
- }
-
- if (index_x < width - 1) {
- num += source[index_y * width + index_x + 1] == '#';
- }
-
- // Check 3 seats on the line above
- if (index_y < height - 1) {
- size_t x = index_x == 0 ? index_x : index_x - 1;
- size_t end_x = index_x < width - 1 ? index_x + 2 : index_x + 1;
- for (; x < end_x; x++) {
- num += source[(index_y + 1) * width + x] == '#';
- }
- }
-
- return num;
-}
-
-int solve(const char *filename)
-{
- FILE *file = fopen(filename, "r");
-
- // Include space for newline and string terminator
- char buffer[128] = { 0 };
-
- char input[MAX_INPUT] = { 0 };
- size_t height = 1;
- fgets(buffer, 128, file);
- size_t width = strchr(buffer, '\n') - buffer;
- replace_char(input, buffer, 'L', '#');
-
- while (fgets(buffer, 128, file)) {
- // Round 1
- replace_char(&input[height++ * width], buffer, 'L', '#');
- }
-
- fclose(file);
-
- size_t size = height * width;
-
- // Zero terminate
- input[size] = 0;
-
- char input2[MAX_INPUT] = { 0 };
- do {
- for (size_t i = 0; i < size; i++) {
- if (input[i] == '.') {
- input2[i] = '.';
- }
- else if (input[i] == 'L') {
- if (sur_oc_seats(input, width, height, i / width, i % width) == 0) {
- input2[i] = '#';
- }
- else {
- input2[i] = 'L';
- }
- }
- else if (input[i] == '#') {
- if (sur_oc_seats(input, width, height, i / width, i % width) >= 4) {
- input2[i] = 'L';
- }
- else {
- input2[i] = '#';
- }
- }
- }
- } while (memcmp(input, input2, size) && memcpy(input, input2, size));
-
- return count_char(input, '#');
-}
-
-int main(int argc, char *argv[])
-{
- printf("%i\n", solve(argv[argc - 1]));
-}