diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/day6.rs | 17 | ||||
| -rw-r--r-- | src/main.rs | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/day6.rs b/src/day6.rs new file mode 100644 index 0000000..1e2dcfd --- /dev/null +++ b/src/day6.rs @@ -0,0 +1,17 @@ +pub fn run(input: String) { + //let wlen = 4; + let wlen = 14; + let (wix, _) = input.chars().collect::<Vec<char>>().windows(wlen).enumerate().find(|(_, win)| { + //println!("checking window {:?}", win.into_iter().map(|ch|{ch.to_owned()}).collect::<Vec<char>>()); + let n = win.len(); + for i in 0..n { + for j in i..n { + if i != j && win[i]==win[j] { + return false; + } + } + } + return true; + }).expect("no unique sequence!"); + println!("Day 6: {}", wix + wlen); +}
\ No newline at end of file diff --git a/src/main.rs b/src/main.rs index 12aa4b2..0be4d7f 100644 --- a/src/main.rs +++ b/src/main.rs @@ -5,6 +5,7 @@ mod day2; mod day3; mod day4; mod day5; +mod day6; fn main() { day1::run(fs::read_to_string("input/day1.txt").expect("Failed to read input file!")); @@ -12,4 +13,5 @@ fn main() { day3::run(fs::read_to_string("input/day3.txt").expect("Failed to read input file!")); day4::run(fs::read_to_string("input/day4.txt").expect("Failed to read input file!")); day5::run(fs::read_to_string("input/day5.txt").expect("Failed to read input file!")); + day6::run(fs::read_to_string("input/day6.txt").expect("Failed to read input file!")); } |