prepare for more puzzles ... :)

1 files changed, 0 insertions, 102 deletions

diff --git a/src/day15.cpp b/src/day15.cpp
deleted file mode 100644
index 6fcbfc2..0000000
--- a/src/day15.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <algorithm>
-#include <fstream>
-#include <iostream>
-#include <list>
-#include <numeric>
-#include <sstream>
-#include <string>
-#include <vector>
-using namespace std;
-
-string
-read_file(string_view filename)
-{
-        fstream input{ filename };
-        return { istreambuf_iterator<char>{ input }, istreambuf_iterator<char>{} };
-}
-
-void
-rtrim(string& str)
-{
-        str.erase(find_if(str.rbegin(), str.rend(), [](auto chr) { return !isspace(chr); }).base(), str.end());
-}
-
-vector<string>
-split(const string& line, char sep)
-{
-        vector<string> parts{};
-        stringstream   input{ line };
-
-        for ( string part; getline(input, part, sep); ) {
-                rtrim(part);
-                parts.emplace_back(part);
-        }
-
-        return parts;
-}
-
-unsigned int
-calculate_hash(string_view str)
-{
-        unsigned int value = 0;
-        for ( auto chr: str ) {
-                value += static_cast<unsigned char>(chr);
-                value *= 17;
-        }
-        return value % 256;
-}
-
-void
-part1()
-{
-        const auto parts = split(read_file("data/day15.txt"), ',');
-        cout << accumulate(parts.begin(), parts.end(), 0UL, [](auto init, const auto& str) { return init + calculate_hash(str); }) << endl;
-}
-
-void
-part2()
-{
-        vector<list<tuple<string, long>>> boxes(256);
-
-        const auto line  = read_file("data/day15.txt");
-        const auto parts = split(line, ',');
-        for ( const auto& part: parts ) {
-                const auto pos  = part.find_first_of("=-");
-                const auto lens = part.substr(0, pos);
-                auto&      box  = boxes[calculate_hash(lens)];
-
-                if ( part[pos] == '=' ) {
-                        const auto value = stol(part.substr(pos + 1));
-
-                        auto iter = find_if(box.begin(), box.end(), [&lens](const auto& element) { return get<0>(element) == lens; });
-                        if ( iter == box.end() ) {
-                                box.emplace_back(lens, value);
-                        }
-                        else {
-                                get<1>(*iter) = value;
-                        }
-                }
-                else {
-                        box.remove_if([&lens](const auto& element) { return get<0>(element) == lens; });
-                }
-        }
-
-        long value = 0;
-        for ( size_t idx = 0; idx != boxes.size(); ++idx ) {
-                const auto& box = boxes[idx];
-
-                long lens_number = 1;
-                for ( const auto& lens: box ) {
-                        value += static_cast<long>(idx + 1) * lens_number * get<1>(lens);
-                        ++lens_number;
-                }
-        }
-        cout << value << endl;
-}
-
-int
-main()
-{
-        part1();
-        part2();
-}