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2022 day 3 / cleanup some C code, update RESULTS.txt

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This commit is contained in:
Bruno Raoult
2022-12-07 21:49:48 +01:00
parent f68d5b319e
commit a0fddb5f44
2 changed files with 38 additions and 48 deletions
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64
2022/day03/aoc-c.c
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@@ -22,10 +22,6 @@
#define NCHARS ('Z' - 'A' + 1 + 'z' - 'a' + 1)
static char c1[2][NCHARS]; /* char exists in set */
static char c2[3][NCHARS];
static char ctmp[NCHARS];
#define CHAR2POS(c) ((c) > 'Z'? (c) - 'a': (c) - 'A' + 26)
#define POS2CHAR(p) ((p) < 26? (p) + 'a': (p) - 26 + 'A')
@@ -66,56 +62,34 @@ static int exists_match(char *dest, char *c1, char *c2)
return count;
}
static void exists_print(char *ex)
{
printf("found:");
for (int i = 0; i < NCHARS; ++i) {
if (ex[i])
printf(" %c", POS2CHAR(i));
}
printf("\n");
}
static int *parse(int *res)
{
size_t alloc = 0;
char *buf[3] = { NULL, NULL, NULL };
char *buf = NULL;
ssize_t buflen;
int curc2 = 0;
int foo;
int curc2 = 0; /* counter for part2 */
char c1[2][NCHARS], c2[3][NCHARS], ctmp[NCHARS]; /* char exists in set */
while ((buflen = getline(&buf[curc2], &alloc, stdin)) > 0) {
buf[curc2][--buflen] = 0;
while ((buflen = getline(&buf, &alloc, stdin)) > 0) {
buf[--buflen] = 0;
int half = buflen / 2;
//printf("half=%lu/%d\n", buflen, half);
/* populate c1 */
exists_populate(c1[0], buf[curc2], half);
exists_populate(c1[1], buf[curc2] + half, half);
//exists_print(c1[0]);
//exists_print(c1[1]);g
foo = exists_match(NULL, c1[0], c1[1]);
res[0] += foo + 1;
//printf("match=%c\n", POS2CHAR(exists_match(NULL, c1[0], c1[1])));
//exit(0);
/* populate c2 */
//exists_init(c2[curc2]);
exists_populate(c2[curc2], buf[curc2], buflen);
exists_populate(c1[0], buf, half);
exists_populate(c1[1], buf + half, half);
/* calculate part 1 */
res[0] += exists_match(NULL, c1[0], c1[1]) + 1;
if (!(++curc2 % 3)) { /* calculate part 2 */
//printf("curc2=%d, part2\n", curc2);
/* populate c2 */
exists_populate(c2[curc2], buf, buflen);
if (!(++curc2 % 3)) { /* calculate part 2 */
exists_match(ctmp, c2[0], c2[1]);
foo = exists_match(NULL, ctmp, c2[2]);
res[1] += foo + 1;
//printf("match 2 =%c\n", POS2CHAR(foo));
res[1] += exists_match(NULL, ctmp, c2[2]) + 1;
curc2 = 0;
}
//printf("\n");
}
for (int i = 0; i < 3; ++i)
free(buf[i]);
free(buf);
return res;
}
@@ -123,13 +97,7 @@ static int *parse(int *res)
int main(int ac, char **av)
{
int res[2] = { 0, 0 };
printf("a=%d z=%d A=%d Z=%d\n", CHAR2POS('a'), CHAR2POS('z'),
CHAR2POS('A'), CHAR2POS('Z'));
printf("NCHARS=%d 0=%c 25=%c 26=%c 51=%c\n", NCHARS, POS2CHAR(0),
POS2CHAR(25), POS2CHAR(26), POS2CHAR(51));
// printf("%s: res=%d\n", *av, parse(res)[parseargs(ac, av) - 1]);
//int part = parseargs(ac, av);
printf("%s: res=%d\n", *av, parse(res)[parseargs(ac, av) - 1]);
printf("%s: res=%d\n", *av, parse(res)[parseargs(ac, av) - 1]);
exit(0);
}