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Dynamically count lines

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This commit is contained in:
Bill Rossi 2024-12-01 00:25:47 -05:00
parent b8a1300703
commit 3c366ab7d1
2 changed files with 17 additions and 10 deletions
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18
c/2024/1/historian_hysteria.c
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@ -4,14 +4,12 @@
#include "../../lib/aoc.h" #include "../../lib/aoc.h"
// TODO figure this out dynamically
#define ARRAY_SIZE 1000
int main() { int main() {
char *line; char *line;
int line_count = aoc_line_count();
int left[ARRAY_SIZE]; int left[line_count];
int right[ARRAY_SIZE]; int right[line_count];
int index = 0; int index = 0;
while ((line = aoc_read_line()) != NULL) { while ((line = aoc_read_line()) != NULL) {
@ -22,12 +20,12 @@ int main() {
index++; index++;
} }
qsort(left, ARRAY_SIZE, sizeof(int), aoc_sort_int); qsort(left, line_count, sizeof(int), aoc_sort_int);
qsort(right, ARRAY_SIZE, sizeof(int), aoc_sort_int); qsort(right, line_count, sizeof(int), aoc_sort_int);
int sum = 0; int sum = 0;
for (int i = 0; i < ARRAY_SIZE; i++) { for (int i = 0; i < line_count; i++) {
sum += abs(left[i] - right[i]); sum += abs(left[i] - right[i]);
} }
@ -36,9 +34,9 @@ int main() {
int similarity_score = 0; int similarity_score = 0;
int j = 0; int j = 0;
for (int i = 0; i < ARRAY_SIZE; i++) { for (int i = 0; i < line_count; i++) {
int right_count = 0; int right_count = 0;
for (; j < ARRAY_SIZE; j++) { for (; j < line_count; j++) {
if (left[i] == right[j]) right_count++; if (left[i] == right[j]) right_count++;
else if (left[i] < right[j]) break; else if (left[i] < right[j]) break;
} }

9
c/lib/aoc.h
View File

@ -54,6 +54,15 @@ void aoc_free(void) {
free(read_line_buffer); free(read_line_buffer);
} }
int aoc_line_count(void) {
if (input_buffer == NULL) aoc_read_input();
int count = 0;
for (int i = 0; i < strlen(input_buffer); i++) {
if (input_buffer[i] == '\n') count++;
}
return count;
}
int aoc_sort_int(const void *a, const void *b) { int aoc_sort_int(const void *a, const void *b) {
return *(int*) a - *(int*) b; return *(int*) a - *(int*) b;