From 88549528a890816a3bfae5214764619b1037896b Mon Sep 17 00:00:00 2001 From: Florent DENEF Date: Fri, 9 Dec 2022 16:15:13 +0100 Subject: [PATCH 1/4] WIP making it work. --- src/main.rs | 5 +++++ src/prob4/mod.rs | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/src/main.rs b/src/main.rs index 61b2c22..88bfc5e 100644 --- a/src/main.rs +++ b/src/main.rs @@ -28,4 +28,9 @@ fn main() { let max_part1 = prob4::solve(file_path, &prob4::mutual_inclusion); println!("Solution for problem 4 part 1: {max_part1}"); } + { + let file_path = "prob4_part1.txt"; + let max_part1 = prob4::solve(file_path, &prob4::complete_overlap); + println!("Solution for problem 4 part 2: {max_part1}"); + } } diff --git a/src/prob4/mod.rs b/src/prob4/mod.rs index 6219ab8..491afa2 100644 --- a/src/prob4/mod.rs +++ b/src/prob4/mod.rs @@ -3,6 +3,10 @@ pub fn mutual_inclusion(first_pair: &[u32], second_pair: &[u32]) -> bool { || (second_pair[0] <= first_pair[0] && second_pair[1] >= first_pair[1]) } +pub fn complete_overlap(first_pair: &[u32], second_pair: &[u32]) -> bool { + (second_pair[0] <= first_pair[0] && first_pair[0] <= second_pair[1]) || (second_pair[0] <= first_pair[1] && first_pair[1] <= second_pair[1]) +} + pub fn solve(file_path: &str, unary_operator: &dyn Fn(&[u32], &[u32]) -> bool) -> i32 { std::fs::read_to_string(file_path) .expect("Please provide a text file as an argument.") From 660cca5d23830428c73f88e7160b9bba67e7efd9 Mon Sep 17 00:00:00 2001 From: Pcornat Date: Sat, 10 Dec 2022 12:29:37 +0100 Subject: [PATCH 2/4] Finally working \o/ --- src/prob4/mod.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/prob4/mod.rs b/src/prob4/mod.rs index 491afa2..35e3b3e 100644 --- a/src/prob4/mod.rs +++ b/src/prob4/mod.rs @@ -4,7 +4,9 @@ pub fn mutual_inclusion(first_pair: &[u32], second_pair: &[u32]) -> bool { } pub fn complete_overlap(first_pair: &[u32], second_pair: &[u32]) -> bool { - (second_pair[0] <= first_pair[0] && first_pair[0] <= second_pair[1]) || (second_pair[0] <= first_pair[1] && first_pair[1] <= second_pair[1]) + first_pair[0] >= second_pair[0] && first_pair[0] <= second_pair[1] + || first_pair[1] >= second_pair[0] && first_pair[1] <= second_pair[1] + || mutual_inclusion(first_pair, second_pair) } pub fn solve(file_path: &str, unary_operator: &dyn Fn(&[u32], &[u32]) -> bool) -> i32 { From 0408d3e148afe1d88ce82f1a727d1e77129aa147 Mon Sep 17 00:00:00 2001 From: Pcornat Date: Sun, 11 Dec 2022 21:43:38 +0100 Subject: [PATCH 3/4] End of day commit, nothing works. Will be using a parsing library (nom) --- Cargo.toml | 1 + prob5_part1.txt | 511 ++++++++++++++++++++++++++++++++++++++++++++++++ src/lib.rs | 3 +- src/main.rs | 7 +- src/prob5.rs | 23 +++ 5 files changed, 543 insertions(+), 2 deletions(-) create mode 100644 prob5_part1.txt create mode 100644 src/prob5.rs diff --git a/Cargo.toml b/Cargo.toml index 91123ca..63147f6 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -11,3 +11,4 @@ incremental = true rpath = true [dependencies] +nom = "7.1.1" diff --git a/prob5_part1.txt b/prob5_part1.txt new file mode 100644 index 0000000..ed6656b --- /dev/null +++ b/prob5_part1.txt @@ -0,0 +1,511 @@ +[B] [N] [H] +[V] [P] [T] [V] [P] +[W] [C] [T] [S] [H] [N] +[T] [J] [Z] [M] [N] [F] [L] +[Q] [W] [N] [J] [T] [Q] [R] [B] +[N] [B] [Q] [R] [V] [F] [D] [F] [M] +[H] [W] [S] [J] [P] [W] [L] [P] [S] +[D] [D] [T] [F] [G] [B] [B] [H] [Z] + 1 2 3 4 5 6 7 8 9 + +move 2 from 8 to 1 +move 4 from 9 to 8 +move 2 from 1 to 6 +move 7 from 4 to 2 +move 10 from 2 to 7 +move 2 from 1 to 6 +move 1 from 9 to 4 +move 1 from 4 to 1 +move 8 from 6 to 4 +move 7 from 1 to 8 +move 6 from 8 to 1 +move 1 from 4 to 1 +move 8 from 7 to 3 +move 2 from 5 to 2 +move 5 from 3 to 2 +move 5 from 2 to 1 +move 1 from 6 to 5 +move 2 from 2 to 6 +move 5 from 8 to 7 +move 12 from 7 to 4 +move 3 from 5 to 4 +move 2 from 6 to 4 +move 9 from 1 to 7 +move 4 from 3 to 7 +move 4 from 3 to 4 +move 3 from 1 to 7 +move 1 from 9 to 1 +move 1 from 1 to 4 +move 2 from 5 to 2 +move 1 from 3 to 7 +move 15 from 7 to 2 +move 4 from 7 to 9 +move 6 from 9 to 2 +move 2 from 8 to 3 +move 3 from 2 to 8 +move 1 from 7 to 6 +move 8 from 2 to 5 +move 2 from 8 to 4 +move 2 from 3 to 8 +move 9 from 5 to 9 +move 7 from 4 to 2 +move 1 from 8 to 6 +move 6 from 9 to 2 +move 3 from 9 to 7 +move 2 from 8 to 4 +move 7 from 2 to 6 +move 7 from 4 to 1 +move 3 from 1 to 8 +move 2 from 1 to 8 +move 4 from 8 to 2 +move 2 from 1 to 5 +move 19 from 2 to 7 +move 8 from 4 to 7 +move 18 from 7 to 1 +move 11 from 7 to 4 +move 15 from 1 to 7 +move 9 from 4 to 3 +move 2 from 3 to 1 +move 9 from 4 to 5 +move 1 from 8 to 1 +move 8 from 6 to 5 +move 3 from 2 to 5 +move 1 from 6 to 7 +move 4 from 4 to 3 +move 8 from 5 to 1 +move 13 from 1 to 6 +move 12 from 7 to 1 +move 12 from 6 to 3 +move 1 from 7 to 6 +move 1 from 7 to 5 +move 1 from 1 to 9 +move 1 from 3 to 1 +move 3 from 1 to 9 +move 12 from 3 to 8 +move 1 from 9 to 3 +move 1 from 6 to 8 +move 5 from 5 to 1 +move 1 from 6 to 2 +move 10 from 8 to 9 +move 13 from 9 to 2 +move 10 from 3 to 4 +move 1 from 8 to 9 +move 2 from 8 to 7 +move 1 from 3 to 1 +move 1 from 5 to 6 +move 13 from 2 to 5 +move 1 from 9 to 2 +move 7 from 1 to 4 +move 2 from 2 to 5 +move 2 from 7 to 8 +move 1 from 6 to 8 +move 10 from 5 to 8 +move 3 from 7 to 2 +move 4 from 1 to 4 +move 12 from 4 to 2 +move 10 from 5 to 3 +move 6 from 2 to 1 +move 2 from 4 to 8 +move 3 from 4 to 8 +move 6 from 1 to 7 +move 1 from 7 to 5 +move 12 from 8 to 2 +move 3 from 4 to 9 +move 1 from 4 to 3 +move 2 from 9 to 6 +move 2 from 6 to 8 +move 1 from 1 to 3 +move 8 from 2 to 6 +move 4 from 1 to 8 +move 12 from 2 to 3 +move 4 from 6 to 8 +move 10 from 8 to 3 +move 14 from 3 to 8 +move 5 from 5 to 8 +move 1 from 7 to 8 +move 5 from 3 to 5 +move 4 from 7 to 2 +move 2 from 6 to 1 +move 4 from 3 to 7 +move 4 from 5 to 1 +move 21 from 8 to 6 +move 7 from 3 to 2 +move 1 from 5 to 1 +move 4 from 8 to 9 +move 16 from 6 to 1 +move 1 from 8 to 4 +move 5 from 9 to 2 +move 7 from 1 to 7 +move 10 from 1 to 3 +move 1 from 4 to 2 +move 6 from 6 to 5 +move 6 from 1 to 4 +move 4 from 7 to 9 +move 1 from 6 to 5 +move 5 from 7 to 6 +move 3 from 6 to 8 +move 1 from 7 to 6 +move 6 from 4 to 8 +move 4 from 8 to 3 +move 4 from 8 to 4 +move 17 from 2 to 1 +move 8 from 3 to 4 +move 5 from 4 to 3 +move 10 from 1 to 5 +move 11 from 3 to 5 +move 1 from 7 to 9 +move 3 from 6 to 4 +move 9 from 4 to 9 +move 7 from 1 to 3 +move 1 from 4 to 8 +move 7 from 5 to 4 +move 18 from 5 to 1 +move 13 from 1 to 6 +move 1 from 1 to 5 +move 1 from 1 to 6 +move 2 from 3 to 1 +move 1 from 3 to 1 +move 5 from 1 to 6 +move 4 from 5 to 8 +move 2 from 4 to 9 +move 1 from 1 to 9 +move 6 from 3 to 8 +move 1 from 4 to 5 +move 10 from 8 to 7 +move 16 from 6 to 7 +move 1 from 5 to 4 +move 1 from 7 to 2 +move 2 from 2 to 6 +move 2 from 8 to 5 +move 5 from 4 to 9 +move 2 from 5 to 9 +move 7 from 9 to 8 +move 2 from 6 to 9 +move 4 from 8 to 9 +move 7 from 9 to 7 +move 13 from 9 to 5 +move 10 from 5 to 1 +move 3 from 8 to 4 +move 5 from 1 to 3 +move 3 from 5 to 6 +move 3 from 9 to 7 +move 1 from 1 to 7 +move 2 from 1 to 3 +move 1 from 6 to 1 +move 4 from 3 to 8 +move 1 from 8 to 9 +move 1 from 8 to 7 +move 1 from 8 to 4 +move 1 from 9 to 7 +move 1 from 8 to 5 +move 2 from 4 to 3 +move 4 from 6 to 3 +move 1 from 5 to 1 +move 1 from 6 to 4 +move 2 from 4 to 5 +move 1 from 4 to 6 +move 1 from 6 to 4 +move 30 from 7 to 3 +move 1 from 5 to 1 +move 6 from 7 to 3 +move 2 from 1 to 7 +move 2 from 1 to 2 +move 2 from 2 to 1 +move 1 from 4 to 9 +move 3 from 1 to 2 +move 1 from 9 to 5 +move 2 from 7 to 1 +move 1 from 7 to 3 +move 1 from 1 to 9 +move 1 from 5 to 8 +move 1 from 1 to 2 +move 1 from 7 to 3 +move 1 from 9 to 4 +move 18 from 3 to 4 +move 1 from 5 to 9 +move 1 from 9 to 6 +move 1 from 2 to 7 +move 1 from 8 to 7 +move 1 from 6 to 3 +move 1 from 7 to 2 +move 14 from 4 to 6 +move 1 from 7 to 6 +move 15 from 6 to 4 +move 20 from 3 to 1 +move 5 from 4 to 9 +move 5 from 4 to 2 +move 15 from 1 to 7 +move 11 from 7 to 9 +move 2 from 7 to 6 +move 1 from 6 to 4 +move 1 from 6 to 3 +move 2 from 7 to 8 +move 10 from 4 to 3 +move 15 from 9 to 3 +move 1 from 9 to 7 +move 29 from 3 to 6 +move 3 from 1 to 6 +move 1 from 8 to 4 +move 2 from 4 to 3 +move 1 from 8 to 9 +move 4 from 6 to 1 +move 20 from 6 to 2 +move 5 from 1 to 9 +move 3 from 6 to 2 +move 4 from 6 to 3 +move 4 from 3 to 1 +move 4 from 1 to 4 +move 3 from 4 to 8 +move 6 from 3 to 4 +move 6 from 2 to 6 +move 1 from 7 to 1 +move 3 from 6 to 8 +move 6 from 9 to 3 +move 1 from 1 to 4 +move 1 from 1 to 7 +move 3 from 4 to 5 +move 2 from 6 to 4 +move 2 from 5 to 6 +move 4 from 8 to 7 +move 1 from 5 to 6 +move 1 from 8 to 4 +move 1 from 8 to 4 +move 2 from 4 to 9 +move 4 from 7 to 8 +move 4 from 4 to 3 +move 1 from 7 to 9 +move 4 from 8 to 6 +move 1 from 3 to 4 +move 1 from 3 to 5 +move 2 from 4 to 7 +move 4 from 6 to 3 +move 2 from 9 to 1 +move 2 from 7 to 4 +move 1 from 5 to 1 +move 1 from 3 to 4 +move 1 from 9 to 3 +move 4 from 4 to 5 +move 2 from 5 to 3 +move 1 from 5 to 7 +move 1 from 5 to 8 +move 2 from 6 to 4 +move 3 from 1 to 3 +move 21 from 3 to 5 +move 3 from 6 to 1 +move 1 from 7 to 1 +move 4 from 2 to 6 +move 1 from 8 to 2 +move 10 from 2 to 4 +move 4 from 1 to 2 +move 1 from 6 to 5 +move 2 from 6 to 9 +move 7 from 4 to 9 +move 1 from 6 to 5 +move 3 from 9 to 4 +move 6 from 2 to 8 +move 3 from 9 to 1 +move 8 from 4 to 3 +move 1 from 9 to 4 +move 21 from 5 to 7 +move 1 from 1 to 3 +move 2 from 9 to 6 +move 14 from 7 to 1 +move 2 from 4 to 1 +move 2 from 8 to 7 +move 1 from 8 to 2 +move 11 from 2 to 9 +move 8 from 9 to 6 +move 4 from 7 to 1 +move 1 from 7 to 4 +move 2 from 3 to 5 +move 1 from 1 to 6 +move 1 from 8 to 2 +move 3 from 7 to 5 +move 6 from 1 to 7 +move 1 from 8 to 7 +move 1 from 4 to 5 +move 4 from 6 to 5 +move 6 from 7 to 6 +move 3 from 9 to 1 +move 1 from 7 to 3 +move 11 from 5 to 1 +move 1 from 5 to 2 +move 9 from 6 to 4 +move 1 from 7 to 3 +move 2 from 6 to 1 +move 1 from 2 to 1 +move 1 from 2 to 6 +move 14 from 1 to 5 +move 1 from 8 to 4 +move 10 from 1 to 5 +move 3 from 5 to 1 +move 8 from 3 to 8 +move 16 from 5 to 7 +move 2 from 1 to 9 +move 3 from 8 to 1 +move 1 from 2 to 4 +move 6 from 7 to 4 +move 3 from 5 to 8 +move 2 from 3 to 6 +move 7 from 1 to 7 +move 14 from 4 to 3 +move 9 from 7 to 8 +move 2 from 4 to 1 +move 9 from 8 to 4 +move 7 from 8 to 2 +move 6 from 1 to 8 +move 1 from 9 to 7 +move 1 from 1 to 6 +move 1 from 9 to 6 +move 1 from 5 to 9 +move 1 from 5 to 3 +move 9 from 4 to 9 +move 3 from 3 to 6 +move 8 from 6 to 3 +move 1 from 2 to 9 +move 8 from 9 to 8 +move 6 from 2 to 9 +move 2 from 6 to 1 +move 7 from 8 to 6 +move 2 from 9 to 6 +move 8 from 7 to 8 +move 1 from 4 to 5 +move 9 from 3 to 5 +move 2 from 1 to 4 +move 1 from 7 to 4 +move 2 from 4 to 3 +move 11 from 8 to 1 +move 1 from 4 to 7 +move 1 from 7 to 8 +move 5 from 1 to 3 +move 4 from 6 to 4 +move 2 from 4 to 8 +move 1 from 4 to 8 +move 7 from 8 to 9 +move 1 from 8 to 9 +move 1 from 8 to 5 +move 18 from 3 to 2 +move 17 from 2 to 7 +move 6 from 5 to 4 +move 1 from 2 to 5 +move 4 from 4 to 6 +move 4 from 6 to 9 +move 15 from 7 to 9 +move 2 from 1 to 6 +move 2 from 7 to 9 +move 28 from 9 to 2 +move 1 from 6 to 7 +move 4 from 6 to 9 +move 3 from 1 to 7 +move 2 from 6 to 3 +move 1 from 4 to 7 +move 8 from 9 to 5 +move 13 from 5 to 3 +move 1 from 5 to 7 +move 3 from 9 to 4 +move 8 from 3 to 7 +move 28 from 2 to 5 +move 1 from 9 to 8 +move 4 from 3 to 4 +move 4 from 7 to 5 +move 2 from 3 to 9 +move 21 from 5 to 4 +move 1 from 5 to 7 +move 1 from 3 to 5 +move 3 from 5 to 7 +move 1 from 1 to 3 +move 3 from 7 to 3 +move 5 from 7 to 6 +move 10 from 4 to 8 +move 6 from 5 to 4 +move 1 from 9 to 3 +move 15 from 4 to 5 +move 10 from 4 to 7 +move 3 from 3 to 7 +move 1 from 3 to 4 +move 1 from 3 to 4 +move 7 from 5 to 1 +move 2 from 4 to 7 +move 1 from 9 to 2 +move 2 from 6 to 9 +move 1 from 5 to 3 +move 1 from 3 to 8 +move 10 from 7 to 9 +move 2 from 8 to 1 +move 9 from 9 to 2 +move 1 from 4 to 3 +move 9 from 8 to 7 +move 1 from 2 to 8 +move 5 from 5 to 4 +move 1 from 3 to 2 +move 5 from 4 to 3 +move 3 from 5 to 9 +move 6 from 7 to 3 +move 1 from 6 to 5 +move 5 from 9 to 7 +move 2 from 5 to 6 +move 3 from 6 to 7 +move 4 from 1 to 4 +move 6 from 2 to 7 +move 17 from 7 to 5 +move 1 from 6 to 1 +move 5 from 3 to 6 +move 10 from 7 to 2 +move 1 from 8 to 4 +move 1 from 9 to 8 +move 3 from 4 to 1 +move 1 from 7 to 4 +move 5 from 5 to 9 +move 2 from 8 to 7 +move 3 from 3 to 7 +move 4 from 2 to 3 +move 3 from 4 to 6 +move 7 from 5 to 8 +move 7 from 2 to 8 +move 4 from 9 to 8 +move 12 from 8 to 3 +move 17 from 3 to 2 +move 1 from 7 to 9 +move 1 from 3 to 9 +move 3 from 9 to 1 +move 2 from 5 to 1 +move 1 from 3 to 5 +move 4 from 5 to 8 +move 6 from 8 to 1 +move 17 from 2 to 3 +move 13 from 3 to 2 +move 1 from 3 to 9 +move 1 from 8 to 4 +move 1 from 4 to 8 +move 1 from 9 to 1 +move 2 from 7 to 2 +move 8 from 6 to 2 +move 2 from 7 to 5 +move 9 from 1 to 3 +move 13 from 2 to 9 +move 6 from 1 to 4 +move 6 from 4 to 5 +move 3 from 8 to 1 +move 2 from 1 to 8 +move 8 from 5 to 7 +move 2 from 3 to 1 +move 9 from 3 to 1 +move 3 from 8 to 2 +move 1 from 1 to 9 +move 1 from 3 to 9 +move 6 from 7 to 3 +move 4 from 2 to 7 +move 14 from 1 to 6 +move 2 from 3 to 9 +move 3 from 3 to 7 +move 6 from 2 to 1 +move 2 from 1 to 2 +move 9 from 6 to 3 +move 11 from 9 to 5 +move 9 from 7 to 6 +move 6 from 6 to 2 +move 1 from 1 to 8 +move 5 from 9 to 4 +move 1 from 8 to 5 +move 9 from 2 to 7 +move 10 from 5 to 8 \ No newline at end of file diff --git a/src/lib.rs b/src/lib.rs index 6b038a0..c73f603 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,4 +1,5 @@ pub mod prob1; pub mod prob2; pub mod prob3; -pub mod prob4; \ No newline at end of file +pub mod prob4; +pub mod prob5; \ No newline at end of file diff --git a/src/main.rs b/src/main.rs index 88bfc5e..daf8965 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,4 +1,4 @@ -use advent_of_code::{prob1, prob2, prob3, prob4}; +use advent_of_code::{prob1, prob2, prob3, prob4, prob5}; fn main() { { @@ -33,4 +33,9 @@ fn main() { let max_part1 = prob4::solve(file_path, &prob4::complete_overlap); println!("Solution for problem 4 part 2: {max_part1}"); } + { + let file_path = "prob5_part1.txt"; + let max_part1 = prob5::solve(file_path); + println!("Solution for problem 5 part 1: {max_part1}"); + } } diff --git a/src/prob5.rs b/src/prob5.rs new file mode 100644 index 0000000..a9ba05a --- /dev/null +++ b/src/prob5.rs @@ -0,0 +1,23 @@ +fn parser(content: &str) { + let output = content + .lines() + .filter(|item| !item.starts_with("move")) + .flat_map(|line| { + let splitted = line + .trim() + .split(' ') + .enumerate() + .filter(|item| !item.1.contains(' ')) + .filter(|item| !item.1.is_empty()) + .collect::>(); + println!("{splitted:?}"); + splitted + }) + .collect::>(); +} + +pub fn solve(file_path: &str) -> i32 { + let content = std::fs::read_to_string(file_path).expect("Please provide a file."); + parser(&content); + 0 +} From 6245e1a17cd3d2864b214a35df2b6d7d8c16cf9c Mon Sep 17 00:00:00 2001 From: Pcornat Date: Mon, 26 Dec 2022 00:34:30 +0100 Subject: [PATCH 4/4] Parser finished. --- src/prob5.rs | 127 +++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 112 insertions(+), 15 deletions(-) diff --git a/src/prob5.rs b/src/prob5.rs index a9ba05a..8bb5be5 100644 --- a/src/prob5.rs +++ b/src/prob5.rs @@ -1,19 +1,116 @@ -fn parser(content: &str) { - let output = content - .lines() - .filter(|item| !item.starts_with("move")) - .flat_map(|line| { - let splitted = line - .trim() - .split(' ') - .enumerate() - .filter(|item| !item.1.contains(' ')) - .filter(|item| !item.1.is_empty()) - .collect::>(); - println!("{splitted:?}"); - splitted +use nom::{ + branch::alt, + bytes::complete::{tag, take, take_while1}, + combinator::{all_consuming, map, map_res, opt}, + sequence::{delimited, preceded, tuple}, + Finish, IResult, +}; + +#[derive(Debug)] +struct Instruction { + quantity: usize, + src: usize, + dst: usize, +} + +/// Used to parse a crate +/// +/// # Arguments +/// +/// * `i`: +/// +/// returns: Result<(&str, char), Err>> +/// +fn parse_crate(i: &str) -> IResult<&str, char> { + let first_char = |s: &str| s.chars().next().unwrap(); + let f = delimited(tag("["), take(1_usize), tag("]")); + map(f, first_char)(i) +} + +fn parse_hole(i: &str) -> IResult<&str, ()> { + // `drop` takes a value and returns nothing, which is + // perfect for our case + map(tag(" "), drop)(i) +} + +fn parse_crate_or_hole(i: &str) -> IResult<&str, Option> { + alt((map(parse_crate, Some), map(parse_hole, |_| None)))(i) +} + +fn parse_crate_line(i: &str) -> IResult<&str, Vec>> { + let (mut i, c) = parse_crate_or_hole(i)?; + let mut v = vec![c]; + + loop { + let (next_i, maybe_c) = opt(preceded(tag(" "), parse_crate_or_hole))(i)?; + match maybe_c { + Some(c) => v.push(c), + None => break, + } + i = next_i; + } + + Ok((i, v)) +} + +fn transpose_rev(v: Vec>>) -> Vec> { + assert!(!v.is_empty()); + let len = v[0].len(); + let mut iters: Vec<_> = v.into_iter().map(|n| n.into_iter()).collect(); + (0..len) + .map(|_| { + iters + .iter_mut() + .filter_map(|n| n.next().unwrap()) + .collect::>() }) - .collect::>(); + .collect() +} + +fn parse_number(i: &str) -> IResult<&str, usize> { + map_res(take_while1(|c: char| c.is_ascii_digit()), |s: &str| { + s.parse::() + })(i) +} + +fn parse_pile_number(i: &str) -> IResult<&str, usize> { + map(parse_number, |i| i - 1)(i) +} + +fn parse_instruction(i: &str) -> IResult<&str, Instruction> { + map( + tuple(( + preceded(tag("move "), parse_number), + preceded(tag(" from "), parse_pile_number), + preceded(tag(" to "), parse_pile_number), + )), + |(quantity, src, dst)| Instruction { quantity, src, dst }, + )(i) +} + +fn parser(content: &str) { + let mut lines = content.lines(); + let crate_lines = (&mut lines) + .map_while(|line| { + all_consuming(parse_crate_line)(line) + .finish() + .ok() + .map(|(_, line)| line) + }) + .collect(); + + let crate_columns = transpose_rev(crate_lines); + + crate_columns.iter().for_each(|item| println!("{item:?}")); + + assert!(lines.next().unwrap().is_empty()); + + let instructions: Vec<_> = lines + .map(|line| all_consuming(parse_instruction)(line).finish().unwrap().1) + .collect(); + for ins in &instructions { + println!("{ins:?}"); + } } pub fn solve(file_path: &str) -> i32 {