[Rust/2020/06] Add solution

README.md

@@ -19,10 +19,10 @@
 |[**20**](https://adventofcode.com/2021/day/20) [<img height=12 src=".assets/rs.svg">](Rust/2021/20.rs "Rust solution for 2021/20") [<img height=12 src=".assets/py.svg">](Python/2021/20.ipynb "Python solution for 2021/20")|[**21**](https://adventofcode.com/2021/day/21) [<img height=12 src=".assets/rs.svg">](Rust/2021/21.rs "Rust solution for 2021/21") [<img height=12 src=".assets/py.svg">](Python/2021/21.ipynb "Python solution for 2021/21")|[**22**](https://adventofcode.com/2021/day/22) [<img height=12 src=".assets/rs.svg">](Rust/2021/22.rs "Rust solution for 2021/22") [<img height=12 src=".assets/py.svg">](Python/2021/22.ipynb "Python solution for 2021/22")|[**23**](https://adventofcode.com/2021/day/23) [<img height=12 src=".assets/rs.svg">](Rust/2021/23.rs "Rust solution for 2021/23") [<img height=12 src=".assets/py.svg">](Python/2021/23.ipynb "Python solution for 2021/23")|[**24**](https://adventofcode.com/2021/day/24) [<img height=12 src=".assets/rs.svg">](Rust/2021/24.rs "Rust solution for 2021/24") [<img height=12 src=".assets/py.svg">](Python/2021/24.ipynb "Python solution for 2021/24")|[**25**](https://adventofcode.com/2021/day/25) [<img height=12 src=".assets/rs.svg">](Rust/2021/25.rs "Rust solution for 2021/25") [<img height=12 src=".assets/py.svg">](Python/2021/25.ipynb "Python solution for 2021/25")|26|
 |27|28|29|30|31|||
 
-## [2020](https://adventofcode.com/2020) ([<img height=18 src=".assets/py.svg"> Python](Python/2020): 25/25 | [<img height=18 src=".assets/rs.svg"> Rust](Rust/2020): 5/25)
+## [2020](https://adventofcode.com/2020) ([<img height=18 src=".assets/py.svg"> Python](Python/2020): 25/25 | [<img height=18 src=".assets/rs.svg"> Rust](Rust/2020): 6/25)
 |Mo|Tu|We|Th|Fr|Sa|Su|
 |-|-|-|-|-|-|-|
-||[**1**](https://adventofcode.com/2020/day/1) [<img height=12 src=".assets/rs.svg">](Rust/2020/01.rs "Rust solution for 2020/01") [<img height=12 src=".assets/py.svg">](Python/2020/01.ipynb "Python solution for 2020/01")|[**2**](https://adventofcode.com/2020/day/2) [<img height=12 src=".assets/rs.svg">](Rust/2020/02.rs "Rust solution for 2020/02") [<img height=12 src=".assets/py.svg">](Python/2020/02.ipynb "Python solution for 2020/02")|[**3**](https://adventofcode.com/2020/day/3) [<img height=12 src=".assets/rs.svg">](Rust/2020/03.rs "Rust solution for 2020/03") [<img height=12 src=".assets/py.svg">](Python/2020/03.ipynb "Python solution for 2020/03")|[**4**](https://adventofcode.com/2020/day/4) [<img height=12 src=".assets/rs.svg">](Rust/2020/04.rs "Rust solution for 2020/04") [<img height=12 src=".assets/py.svg">](Python/2020/04.ipynb "Python solution for 2020/04")|[**5**](https://adventofcode.com/2020/day/5) [<img height=12 src=".assets/rs.svg">](Rust/2020/05.rs "Rust solution for 2020/05") [<img height=12 src=".assets/py.svg">](Python/2020/05.ipynb "Python solution for 2020/05")|[**6**](https://adventofcode.com/2020/day/6) [<img height=12 src=".assets/py.svg">](Python/2020/06.ipynb "Python solution for 2020/06")|
+||[**1**](https://adventofcode.com/2020/day/1) [<img height=12 src=".assets/rs.svg">](Rust/2020/01.rs "Rust solution for 2020/01") [<img height=12 src=".assets/py.svg">](Python/2020/01.ipynb "Python solution for 2020/01")|[**2**](https://adventofcode.com/2020/day/2) [<img height=12 src=".assets/rs.svg">](Rust/2020/02.rs "Rust solution for 2020/02") [<img height=12 src=".assets/py.svg">](Python/2020/02.ipynb "Python solution for 2020/02")|[**3**](https://adventofcode.com/2020/day/3) [<img height=12 src=".assets/rs.svg">](Rust/2020/03.rs "Rust solution for 2020/03") [<img height=12 src=".assets/py.svg">](Python/2020/03.ipynb "Python solution for 2020/03")|[**4**](https://adventofcode.com/2020/day/4) [<img height=12 src=".assets/rs.svg">](Rust/2020/04.rs "Rust solution for 2020/04") [<img height=12 src=".assets/py.svg">](Python/2020/04.ipynb "Python solution for 2020/04")|[**5**](https://adventofcode.com/2020/day/5) [<img height=12 src=".assets/rs.svg">](Rust/2020/05.rs "Rust solution for 2020/05") [<img height=12 src=".assets/py.svg">](Python/2020/05.ipynb "Python solution for 2020/05")|[**6**](https://adventofcode.com/2020/day/6) [<img height=12 src=".assets/rs.svg">](Rust/2020/06.rs "Rust solution for 2020/06") [<img height=12 src=".assets/py.svg">](Python/2020/06.ipynb "Python solution for 2020/06")|
 |[**7**](https://adventofcode.com/2020/day/7) [<img height=12 src=".assets/py.svg">](Python/2020/07.ipynb "Python solution for 2020/07")|[**8**](https://adventofcode.com/2020/day/8) [<img height=12 src=".assets/py.svg">](Python/2020/08.ipynb "Python solution for 2020/08")|[**9**](https://adventofcode.com/2020/day/9) [<img height=12 src=".assets/py.svg">](Python/2020/09.ipynb "Python solution for 2020/09")|[**10**](https://adventofcode.com/2020/day/10) [<img height=12 src=".assets/py.svg">](Python/2020/10.ipynb "Python solution for 2020/10")|[**11**](https://adventofcode.com/2020/day/11) [<img height=12 src=".assets/py.svg">](Python/2020/11.ipynb "Python solution for 2020/11")|[**12**](https://adventofcode.com/2020/day/12) [<img height=12 src=".assets/py.svg">](Python/2020/12.ipynb "Python solution for 2020/12")|[**13**](https://adventofcode.com/2020/day/13) [<img height=12 src=".assets/py.svg">](Python/2020/13.ipynb "Python solution for 2020/13")|
 |[**14**](https://adventofcode.com/2020/day/14) [<img height=12 src=".assets/py.svg">](Python/2020/14.ipynb "Python solution for 2020/14")|[**15**](https://adventofcode.com/2020/day/15) [<img height=12 src=".assets/py.svg">](Python/2020/15.ipynb "Python solution for 2020/15")|[**16**](https://adventofcode.com/2020/day/16) [<img height=12 src=".assets/py.svg">](Python/2020/16.ipynb "Python solution for 2020/16")|[**17**](https://adventofcode.com/2020/day/17) [<img height=12 src=".assets/py.svg">](Python/2020/17.ipynb "Python solution for 2020/17")|[**18**](https://adventofcode.com/2020/day/18) [<img height=12 src=".assets/py.svg">](Python/2020/18.ipynb "Python solution for 2020/18")|[**19**](https://adventofcode.com/2020/day/19) [<img height=12 src=".assets/py.svg">](Python/2020/19.ipynb "Python solution for 2020/19")|[**20**](https://adventofcode.com/2020/day/20) [<img height=12 src=".assets/py.svg">](Python/2020/20.ipynb "Python solution for 2020/20")|
 |[**21**](https://adventofcode.com/2020/day/21) [<img height=12 src=".assets/py.svg">](Python/2020/21.ipynb "Python solution for 2020/21")|[**22**](https://adventofcode.com/2020/day/22) [<img height=12 src=".assets/py.svg">](Python/2020/22.ipynb "Python solution for 2020/22")|[**23**](https://adventofcode.com/2020/day/23) [<img height=12 src=".assets/py.svg">](Python/2020/23.ipynb "Python solution for 2020/23")|[**24**](https://adventofcode.com/2020/day/24) [<img height=12 src=".assets/py.svg">](Python/2020/24.ipynb "Python solution for 2020/24")|[**25**](https://adventofcode.com/2020/day/25) [<img height=12 src=".assets/py.svg">](Python/2020/25.ipynb "Python solution for 2020/25")|26|27|

Rust/2020/06.rs

@@ -0,0 +1,41 @@
+#![feature(test)]
+
+use rustc_hash::FxHashSet;
+
+type Input = Vec<Vec<Vec<u8>>>;
+
+fn setup(input: &str) -> Input {
+    input
+        .split("\n\n")
+        .map(|group| group.lines().map(|line| line.bytes().collect()).collect())
+        .collect()
+}
+
+fn part1(input: &Input) -> usize {
+    input
+        .iter()
+        .map(|group| group.iter().flatten().collect::<FxHashSet<_>>().len())
+        .sum()
+}
+
+fn part2(input: &Input) -> usize {
+    input
+        .iter()
+        .map(|group| {
+            let l = group.len();
+            group
+                .iter()
+                .fold([0; 256], |mut acc, xs| {
+                    for &x in xs {
+                        acc[x as usize] += 1;
+                    }
+                    acc
+                })
+                .into_iter()
+                .filter(|&x| x == l)
+                .count()
+        })
+        .sum()
+}
+
+aoc::main!(2020, 6, ex: 1);

Rust/Cargo.toml

@@ -51,6 +51,9 @@ path = "2020/04.rs"
 [[bin]]
 name = "2020_05"
 path = "2020/05.rs"
+[[bin]]
+name = "2020_06"
+path = "2020/06.rs"
 
 # 2021
 [[bin]]

examples/2020/6/1

@@ -0,0 +1,15 @@
+abc
+
+a
+b
+c
+
+ab
+ac
+
+a
+a
+a
+a
+
+b

examples/2020/6/1.1

@@ -0,0 +1 @@
+11

examples/2020/6/1.2

@@ -0,0 +1 @@
+6