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#include "aoc.h"
#include <algorithm>
namespace aoc2015 {
int count_vowels(line_view lv, const char* vowels) {
ascii_count ac{lv};
int total = 0;
per_char(vowels, [&ac, &total](char c) {
total += ac[c];
return true;
});
return total;
}
bool is_nice(line_view lv, int repeated) {
const char* p = lv.line;
while (p + repeated <= lv.line + lv.length) {
if (is_repeated(p, p + repeated)) {
return true;
} else {
p++;
}
}
return false;
}
bool is_nice(line_view lv, const char* disallowed[], size_t size) {
return not std::any_of(disallowed, disallowed + size, [&lv](const char* s) -> bool { return lv.contains(s); });
}
int day5(line_view file) {
int total = 0;
const char* subs[] = {"ab", "cd", "pq", "xy"};
per_line(file, [&subs, &total](line_view lv) {
auto b1 = count_vowels(lv, "aeiou") >= 3;
auto b2 = is_nice(lv, 2);
auto b3 = is_nice(lv, subs, ARRAY_SIZE(subs));
if (b1 && b2 && b3) {
total += 1;
}
return true;
});
return total;
}
} // namespace aoc2015
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