refactor

1 files changed, 0 insertions, 96 deletions

diff --git a/src/2020/5/mod.rs b/src/2020/5/mod.rs
deleted file mode 100644
index 1f57f4f..0000000
--- a/src/2020/5/mod.rs
+++ /dev/null
@@ -1,96 +0,0 @@
-use crate::prelude::*;
-
-pub fn parse(fh: File) -> Result<impl Iterator<Item = i64>> {
-    Ok(parse::lines(fh).map(|line| seat_id(&line).unwrap()))
-}
-
-pub fn part1(ids: impl Iterator<Item = i64>) -> Result<i64> {
-    let mut max = 0;
-    for id in ids {
-        if id > max {
-            max = id;
-        }
-    }
-    Ok(max)
-}
-
-pub fn part2(ids: impl Iterator<Item = i64>) -> Result<i64> {
-    let mut seats = vec![false; 1024];
-    for id in ids {
-        seats[id as usize] = true;
-    }
-    let first = seats
-        .iter()
-        .position(|b| *b)
-        .context("failed to find taken seat")?;
-    let seat = seats
-        .iter()
-        .skip(first)
-        .position(|b| !*b)
-        .context("failed to find free seat")?
-        + first;
-    if !seats[seat - 1] || seats[seat] || !seats[seat + 1] {
-        return Err(anyhow!("invalid seat found"));
-    }
-    Ok(seat.try_into()?)
-}
-
-fn seat_id(desc: &str) -> Result<i64> {
-    if desc.len() != 10 {
-        return Err(anyhow!("invalid desc {}", desc));
-    }
-    let row_desc = &desc[0..7];
-    let col_desc = &desc[7..10];
-
-    let mut min_row = 0;
-    let mut max_row = 127;
-    for c in row_desc.chars() {
-        let mid = (max_row + min_row) / 2;
-        match c {
-            'F' => {
-                max_row = mid;
-            }
-            'B' => {
-                min_row = mid + 1;
-            }
-            _ => return Err(anyhow!("invalid desc {}", desc)),
-        }
-    }
-    if min_row != max_row {
-        return Err(anyhow!("bug"));
-    }
-    let row = min_row;
-
-    let mut min_col = 0;
-    let mut max_col = 7;
-    for c in col_desc.chars() {
-        let mid = (max_col + min_col) / 2;
-        match c {
-            'L' => {
-                max_col = mid;
-            }
-            'R' => {
-                min_col = mid + 1;
-            }
-            _ => return Err(anyhow!("invalid desc {}", desc)),
-        }
-    }
-    if min_col != max_col {
-        return Err(anyhow!("bug"));
-    }
-    let col = min_col;
-
-    Ok(row * 8 + col)
-}
-
-#[test]
-fn test() {
-    assert_eq!(
-        part1(parse(parse::data(2020, 5).unwrap()).unwrap()).unwrap(),
-        978
-    );
-    assert_eq!(
-        part2(parse(parse::data(2020, 5).unwrap()).unwrap()).unwrap(),
-        727
-    );
-}