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Stuck on day 5.

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Dan Chadwick 2024-11-24 21:22:12 -05:00
parent d17bf4218b
commit 4cad47d04e
3 changed files with 1089 additions and 8 deletions
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78
2015/days/day5.php Normal file
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@ -0,0 +1,78 @@
<?php
/**
* It contains at least three vowels (aeiou only), like aei, xazegov, or aeiouaeiouaeiou.
* It contains at least one letter that appears twice in a row, like xx, abcdde (dd), or aabbccdd (aa, bb, cc, or dd).
* It does not contain the strings ab, cd, pq, or xy, even if they are part of one of the other requirements.
*/
// What do i need to do for each string?
// Count vowels, check if there are >=3
// Count unique chars, ensure one char appears twice
// Check for a certain set of strings to omit.
function checkNice(string $string): bool {
preg_match_all('/[aeiou]/i', $string, $vowels);
if (count($vowels[0]) < 3) {
return FALSE;
}
if (!preg_match('/(.)\1/', $string, $match)){
return FALSE;
}
$omit_strings = [
'ab',
'cd',
'pq',
'xy',
];
foreach ($omit_strings as $omit) {
if (str_contains($string, $omit)) {
return FALSE;
}
}
return TRUE;
}
function checkNice2(string $string): bool {
$two_char_sets = str_split($string, 2);
$str_to_arr = str_split($string);
$counts = array_count_values($two_char_sets);
$is_nice = FALSE;
foreach ($counts as $substr => $count) {
if ($count >= 2) {
$is_nice = TRUE;
preg_match_all('/(.)(.)\1/', $string, $matches);
if (count($matches[0]) > 1) {
$is_nice = TRUE;
}
else {
$is_nice = FALSE;
}
}
}
return $is_nice;
}
function day5($part = 1) {
$file = new SplFileObject("./2015/inputs/day5.txt");
// Loop until we reach the end of the file.
$nice_strings = 0;
while (!$file->eof()) {
// Echo one line from the file.
if ($part == 1) {
$is_nice = checkNice($file->fgets());
}
elseif ($part == 2) {
$is_nice = checkNice2($file->fgets());
}
if ($is_nice) {
$nice_strings++;
}
}
// Unset the file to call __destruct(), closing the file handle.
$file = null;
return $nice_strings;
}

1000
2015/inputs/day5.txt Normal file
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19
2015/solutions.php
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@ -6,14 +6,17 @@ foreach ($days as $day) {
}
$solutions = [];
$solutions['day_1']['part_1'] = day1solution1();
$solutions['day_1']['part_2'] = day1solution1b();
$solutions['day_2']['part_1'] = day2(1);
$solutions['day_2']['part_2'] = day2(2);
$solutions['day_3']['part_1'] = day3(1);
$solutions['day_3']['part_2'] = day3(2);
$solutions['day_4']['part_1'] = day4(1);
$solutions['day_4']['part_2'] = day4(2);
/* $solutions['day_1']['part_1'] = day1solution1(); */
/* $solutions['day_1']['part_2'] = day1solution1b(); */
/* $solutions['day_2']['part_1'] = day2(1); */
/* $solutions['day_2']['part_2'] = day2(2); */
/* $solutions['day_3']['part_1'] = day3(1); */
/* $solutions['day_3']['part_2'] = day3(2); */
/* $solutions['day_4']['part_1'] = day4(1); */
/* $solutions['day_4']['part_2'] = day4(2); */
$solutions['day_5']['part_1'] = day5(1);
$solutions['day_5']['part_2'] = day5(2);
// OUTPUT THE SOLUTIONS WE HAVE.
foreach ($solutions as $day => $parts) {