diff options
| -rw-r--r-- | .gitattributes | 6 | ||||
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | day1/part1/main.ha | 43 |
3 files changed, 52 insertions, 0 deletions
diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..2742e4d --- /dev/null +++ b/.gitattributes @@ -0,0 +1,6 @@ +* text=auto eol=lf + +# Older git versions try to fix line endings on images, this prevents it. +*.png binary +*.jpg binary +*.ico binary diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..7412340 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +*/*/part1 +*/*/part2 +*/*/input.txt diff --git a/day1/part1/main.ha b/day1/part1/main.ha new file mode 100644 index 0000000..4f9b2b2 --- /dev/null +++ b/day1/part1/main.ha @@ -0,0 +1,43 @@ +use os; +use io; +use fmt; +use strings; +use strconv; + +export fn main() void = { + const handle = os::open("input.txt")!; + defer io::close(handle)!; + + let buf = io::drain(handle) as []u8; + defer free(buf); + + let input = strings::fromutf8_unsafe(buf[..]); + let lines = strings::split(input, "\n")!; + + let dial: i16 = 50; + let zeroes_seen: u16 = 0; + + for (let line .. lines[..]) { + if (strings::hasprefix(line, "L")) { + dial -= strconv::stoi16(strings::ltrim(line, 'L'))!; + } else if (strings::hasprefix(line, "R")) { + dial += strconv::stoi16(strings::ltrim(line, 'R'))!; + } else { + continue; + }; + + for (dial < 0 || dial > 99) { + if (dial < 0) { + dial += 100; + } else if (dial > 99) { + dial -= 100; + }; + }; + + if (dial == 0) { + zeroes_seen += 1; + }; + }; + + fmt::printfln("Password: {}", zeroes_seen)!; +}; |