diff options
Diffstat (limited to 'src/day6.rs')
| -rw-r--r-- | src/day6.rs | 17 |
1 files changed, 17 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); +}
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