day 1 solution
parent
b531b180e8
commit
b3ffab172d
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@ -0,0 +1,136 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "anyhow"
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version = "1.0.75"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
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[[package]]
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name = "aoc-runner"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d21ef9204ad206a5a3e918e9920da04e1118ad91ce4f23570be964b9d6b9dfcb"
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[[package]]
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name = "aoc-runner-derive"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ba8b944269d3fee645d281b1335e1797044db497bb02d0098cc3fdb8900069cc"
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dependencies = [
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"aoc-runner-internal",
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"proc-macro2",
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"quote",
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"syn 1.0.109",
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]
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[[package]]
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name = "aoc-runner-internal"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "274b0ba7f3669a45ec0aaacf94eb032a749de880ab776091576cca94037c9982"
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dependencies = [
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"serde",
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"serde_derive",
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"serde_json",
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]
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[[package]]
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name = "aoc2023"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"aoc-runner",
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"aoc-runner-derive",
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]
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[[package]]
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name = "itoa"
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version = "1.0.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
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[[package]]
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name = "proc-macro2"
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version = "1.0.70"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.33"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "ryu"
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version = "1.0.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
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[[package]]
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name = "serde"
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version = "1.0.193"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
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dependencies = [
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"serde_derive",
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]
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[[package]]
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name = "serde_derive"
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version = "1.0.193"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn 2.0.39",
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]
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[[package]]
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name = "serde_json"
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version = "1.0.108"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
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dependencies = [
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"itoa",
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"ryu",
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"serde",
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]
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[[package]]
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name = "syn"
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version = "1.0.109"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "syn"
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version = "2.0.39"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
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@ -0,0 +1,13 @@
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[package]
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name = "aoc2023"
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version = "0.1.0"
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edition = "2021"
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[lib]
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name = "aoc2023"
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path = "src/lib.rs"
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[dependencies]
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anyhow = "1.0.75"
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aoc-runner = "0.3.0"
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aoc-runner-derive = "0.3.0"
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,139 @@
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use aoc_runner_derive::aoc;
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fn parse(input: &str) -> Vec<u32> {
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input
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.lines()
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.filter_map(|l| {
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let v: Vec<&str> = l.matches(char::is_numeric).collect();
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if !v.is_empty() {
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let tens = v[0].parse::<u32>().unwrap() * 10;
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let ones = v[v.len() - 1].parse::<u32>().unwrap();
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Some(tens + ones)
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} else {
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None
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}
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})
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.collect()
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}
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#[aoc(day1, part1)]
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fn part1_sum(input: &str) -> u32 {
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let lines = parse(input);
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lines.iter().sum()
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}
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#[aoc(day1, part2)]
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fn part2_sum(input: &str) -> u32 {
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sub_letters_for_digits(input).iter().sum()
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}
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fn char_to_num(c: char) -> Option<u32> {
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match c {
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'0' => Some(0),
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'1' => Some(1),
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'2' => Some(2),
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'3' => Some(3),
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'4' => Some(4),
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'5' => Some(5),
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'6' => Some(6),
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'7' => Some(7),
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'8' => Some(8),
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'9' => Some(9),
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_ => None,
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}
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}
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const DIGITS: [&'static str; 10] = [
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"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
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];
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fn letter_digit_at(line: &str, index: usize) -> Option<u32> {
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for (dindex, d) in DIGITS.iter().enumerate() {
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if index + d.len() > line.len() {
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continue;
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}
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let index2 = index + d.len();
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let substring: &str = line[index..index2].as_ref();
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if *d == substring {
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// println!("compare {} dindex {} d {}", index, dindex, d);
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return Some(dindex as u32);
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}
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}
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None
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}
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fn digit_for_char(line: &str, index: usize, c: char) -> Option<u32> {
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if c.is_ascii_digit() {
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char_to_num(c)
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} else {
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letter_digit_at(line, index)
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}
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}
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fn sub_letters_for_digits(input: &str) -> Vec<u32> {
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input
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.lines()
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.filter_map(|line| {
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if !line.is_empty() {
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let mut first_digit = 0;
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let mut second_digit = 0;
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for (index, c) in line.chars().enumerate() {
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if let Some(digit) = digit_for_char(line, index, c) {
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first_digit = digit;
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break;
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}
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}
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for (index, c) in line.chars().rev().enumerate() {
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if let Some(digit) = digit_for_char(line, line.len() - index - 1, c) {
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second_digit = digit;
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break;
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}
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}
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let num = first_digit * 10 + second_digit;
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println!("line {} num {}", line, num);
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Some(num)
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} else {
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None
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}
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})
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.collect()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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const SAMPLE_DATA: &'static str = r#"
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1abc2
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pqr3stu8vwx
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a1b2c3d4e5f
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treb7uchet
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"#;
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#[test]
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fn sample_data() {
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let expected = [12, 38, 15, 77];
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let data = parse(SAMPLE_DATA);
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assert_eq!(data, expected);
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let part1 = part1_sum(SAMPLE_DATA);
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assert_eq!(part1, 142);
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}
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const SAMPLE_DATA2: &'static str = r#"
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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"#;
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#[test]
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fn sample_data_part2() {
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let data = sub_letters_for_digits(SAMPLE_DATA2);
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assert_eq!(data, [29, 83, 13, 24, 42, 14, 76]);
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let part2 = part2_sum(SAMPLE_DATA2);
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assert_eq!(part2, 281);
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}
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}
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@ -0,0 +1,5 @@
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use aoc_runner_derive::aoc_lib;
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mod day01;
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aoc_lib! { year = 2023 }
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@ -0,0 +1,7 @@
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extern crate aoc2023;
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extern crate aoc_runner;
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extern crate aoc_runner_derive;
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use aoc_runner_derive::aoc_main;
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aoc_main! { lib = aoc2023; }
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