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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 /4/part2.c
parent49d0c908f24b2c193c9deed1716fe36061ba26a1 (diff)
Move all Advent of Codes into one repo
Diffstat (limited to '4/part2.c')
-rw-r--r--4/part2.c135
1 files changed, 0 insertions, 135 deletions
diff --git a/4/part2.c b/4/part2.c
deleted file mode 100644
index 5aac219..0000000
--- a/4/part2.c
+++ /dev/null
@@ -1,135 +0,0 @@
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define KEYS_LEN 7
-const char* const keys[] = { "byr:", "iyr:", "eyr:", "hgt:", "hcl:", "ecl:", "pid:" };
-
-bool is_valid_field(const char *key, const char *value)
-{
- if (strncmp(key, "byr", 3) == 0) {
- int v = atoi(value);
- return v >= 1920 && v <= 2002;
- }
-
- if (strncmp(key, "iyr", 3) == 0) {
- int v = atoi(value);
- return v >= 2010 && v <= 2020;
- }
-
- if (strncmp(key, "eyr", 3) == 0) {
- int v = atoi(value);
- return v >= 2020 && v <= 2030;
- }
-
- if (strncmp(key, "hgt", 3) == 0) {
- int v = atoi(value);
- if (strncmp(value + 3, "cm", 2) == 0) {
- return v >= 150 && v <= 193;
- }
-
- if (strncmp(value + 2, "in", 2) == 0) {
- return v >= 59 && v <= 76;
- }
-
- return false;
- }
-
- if (strncmp(key, "hcl", 3) == 0) {
- if (value[0] != '#') {
- return false;
- }
-
- for (int i = 1; i < 7; i++) {
- if (!(value[i] >= 48 && value[i] <= 57) && !(value[i] >= 97 && value[i] <= 102)) {
- return false;
- }
- }
-
- return true;
- }
-
- if (strncmp(key, "ecl", 3) == 0) {
- return strncmp(value, "amb", 3) == 0
- || strncmp(value, "blu", 3) == 0
- || strncmp(value, "brn", 3) == 0
- || strncmp(value, "gry", 3) == 0
- || strncmp(value, "grn", 3) == 0
- || strncmp(value, "hzl", 3) == 0
- || strncmp(value, "oth", 3) == 0;
- }
-
- if (strncmp(key, "pid", 3) == 0) {
- for (int i = 0; i < 9; i++) {
- if (!(value[i] >= 48 && value[i] <= 57)) {
- return false;
- }
- }
-
- return !(value[9] >= 48 && value[9] <= 57);
- }
-
- return false;
-}
-
-bool is_valid_passport(const char *pass)
-{
- for (int i = 0; i < KEYS_LEN; i++) {
- const char *p = strstr(pass, keys[i]);
- if (!p) {
- return false;
- }
-
- if (!is_valid_field(p, p + 4)) {
- return false;
- }
- }
-
- return true;
-}
-
-int count_valid_passports(const char *filename)
-{
- FILE *file = fopen(filename, "r");
-
- // Include space for newline and string terminator
- char buffer[128] = { 0 };
-
- uint8_t values = 0;
- int correct = 0;
- while (fgets(buffer, 128, file)) {
- if (buffer[0] == '\n') {
- if (values == 0x7f) {
- correct++;
- }
-
- values = 0;
- }
-
- for (int i = 0; i < KEYS_LEN; i++) {
- const char *p = strstr(buffer, keys[i]);
- if (!p) {
- continue;
- }
-
- if (is_valid_field(p, p + 4)) {
- values = values | (0x1 << i);
- }
- }
- }
-
- if (values == 0x7f) {
- correct++;
- }
-
- fclose(file);
-
- return correct;
-}
-
-int main(int argc, char *argv[])
-{
- printf("%i", count_valid_passports(argv[argc - 1]));
-}