Add day 6

Author: LinAGKar

Day6_input.txt

@@ -0,0 +1 @@
+2,5,3,4,4,5,3,2,3,3,2,2,4,2,5,4,1,1,4,4,5,1,2,1,5,2,1,5,1,1,1,2,4,3,3,1,4,2,3,4,5,1,2,5,1,2,2,5,2,4,4,1,4,5,4,2,1,5,5,3,2,1,3,2,1,4,2,5,5,5,2,3,3,5,1,1,5,3,4,2,1,4,4,5,4,5,3,1,4,5,1,5,3,5,4,4,4,1,4,2,2,2,5,4,3,1,4,4,3,4,2,1,1,5,3,3,2,5,3,1,2,2,4,1,4,1,5,1,1,2,5,2,2,5,2,4,4,3,4,1,3,3,5,4,5,4,5,5,5,5,5,4,4,5,3,4,3,3,1,1,5,2,4,5,5,1,5,2,4,5,4,2,4,4,4,2,2,2,2,2,3,5,3,1,1,2,1,1,5,1,4,3,4,2,5,3,4,4,3,5,5,5,4,1,3,4,4,2,2,1,4,1,2,1,2,1,5,5,3,4,1,3,2,1,4,5,1,5,5,1,2,3,4,2,1,4,1,4,2,3,3,2,4,1,4,1,4,4,1,5,3,1,5,2,1,1,2,3,3,2,4,1,2,1,5,1,1,2,1,2,1,2,4,5,3,5,5,1,3,4,1,1,3,3,2,2,4,3,1,1,2,4,1,1,1,5,4,2,4,3

day6a/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "day6a"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day6a/src/main.rs

@@ -0,0 +1,20 @@
+use std::collections::VecDeque;
+
+fn main() {
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+
+    let mut fish: VecDeque<_> = [0u32; 9].iter().copied().collect();
+
+    for i in input.trim().split(',') {
+        fish[i.parse::<usize>().unwrap()] += 1;
+    }
+
+    for _ in 0..80 {
+        let old_0 = fish.pop_front().unwrap();
+        fish.push_back(old_0);
+        fish[6] += old_0;
+    }
+
+    println!("{}", fish.into_iter().sum::<u32>());
+}

day6b/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "day6b"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day6b/src/main.rs

@@ -0,0 +1,20 @@
+use std::collections::VecDeque;
+
+fn main() {
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+
+    let mut fish: VecDeque<_> = [0u64; 9].iter().copied().collect();
+
+    for i in input.trim().split(',') {
+        fish[i.parse::<usize>().unwrap()] += 1;
+    }
+
+    for _ in 0..256 {
+        let old_0 = fish.pop_front().unwrap();
+        fish.push_back(old_0);
+        fish[6] += old_0;
+    }
+
+    println!("{}", fish.into_iter().sum::<u64>());
+}