PoliEcho/advent-of-code-2024
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PoliEcho 2024-12-12 17:29:05 +01:00
parent 96775c800b
commit deafcf3662
1 changed files with 73 additions and 78 deletions
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139
day2/day.cpp
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@ -1,95 +1,90 @@
#include <algorithm> #include <algorithm>
#include <cstddef> #include <cstddef>
#include <iostream> #include <errno.h>
#include <string> #include <fstream>
#include <vector>
#include <iostream> #include <iostream>
#include <sstream> #include <sstream>
#include <vector>
#include <string> #include <string>
#include <fstream> #include <vector>
#include <errno.h>
std::vector<std::string> splitString(const std::string& str) { std::vector<std::string> splitString(const std::string &str) {
std::istringstream iss(str); std::istringstream iss(str);
std::vector<std::string> words; std::vector<std::string> words;
std::string word; std::string word;
while (iss >> word) { while (iss >> word) {
words.push_back(word); words.push_back(word);
} }
return words; return words;
} }
int main() { int main() {
std::ifstream inputfile("example"); std::ifstream inputfile("input");
std::string input; std::string input;
int res = 0; int res = 0;
if (inputfile.is_open()) { if (inputfile.is_open()) {
// Read each line from the file and store it in the // Read each line from the file and store it in the
// 'line' variable. // 'line' variable.
std::string line; std::string line;
std::vector<std::string> num_s; std::vector<std::string> num_s;
std::vector<int> num; std::vector<int> num;
while (std::getline(inputfile, line)) { while (std::getline(inputfile, line)) {
num_s = splitString(line); num_s = splitString(line);
num.clear(); num.clear();
std::transform(num_s.begin(), num_s.end(), std::back_inserter(num), [](const std::string& s) { std::transform(num_s.begin(), num_s.end(), std::back_inserter(num),
return std::stoi(s); [](const std::string &s) { return std::stoi(s); });
}); bool safe = true;
bool safe = true; int old_n = -1;
int old_n = -1; for (int n : num) {
for (int n : num) { if (old_n == -1) {
if(old_n == -1) { old_n = n;
old_n = n; continue;
continue;
}
if ((old_n - n) > 2 || (old_n - n) > 0) {
safe = false;
}
old_n = n;
} }
if (safe) { if ((old_n - n) > 2 || (old_n - n) < 0 || old_n == n) {
res++; safe = false;
continue; break;
} }
safe = true; old_n = n;
old_n = -1; }
for (int n : num) { if (safe) {
if(old_n == -1) { res++;
old_n = n; std::cerr << line << "\n";
continue; continue;
} }
if ((old_n - n) <= -3 && (old_n - n) < 0) { safe = true;
safe = false; old_n = -1;
} for (int n : num) {
old_n = n; if (old_n == -1) {
old_n = n;
continue;
} }
if (safe) { if ((n - old_n) > 3 || (n - old_n) < 0 || old_n == n) {
res++; safe = false;
break;
} }
} old_n = n;
}
if (safe) {
std::cerr << line << "\n";
// Close the file stream once all lines have been res++;
// read. }
inputfile.close();
}
else {
// Print an error message to the standard error
// stream if the file cannot be opened.
std::cerr << "Unable to open file!" << std::endl;
return ENOENT;
} }
// Close the file stream once all lines have been
// read.
inputfile.close();
} else {
// Print an error message to the standard error
// stream if the file cannot be opened.
std::cerr << "Unable to open file!" << std::endl;
return ENOENT;
}
std::cout << "\n\n" << res << "\n\n";
std::cout << "\n\n" << res << "\n\n"; return 0;
return 0;
} }