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-rw-r--r--day1/src/main.rs21
1 files changed, 10 insertions, 11 deletions
diff --git a/day1/src/main.rs b/day1/src/main.rs
index dd64a15..4db292f 100644
--- a/day1/src/main.rs
+++ b/day1/src/main.rs
@@ -1,5 +1,15 @@
1use std::fs; 1use std::fs;
2 2
3fn ex1(sweep: &[u32]) {
4 let incs = sweep.windows(2).filter(|w| w[0] < w[1]).count();
5 println!("Ex1: depth increases {} times.", incs);
6}
7
8fn ex2(sweep: &[u32]) {
9 let incs = sweep.windows(4).filter(|w| w[0] < w[3]).count();
10 println!("Ex2: depth increases {} times.", incs);
11}
12
3/* AOC21 Day 1: https://adventofcode.com/2021/day/1 */ 13/* AOC21 Day 1: https://adventofcode.com/2021/day/1 */
4fn main() { 14fn main() {
5 let input = "resources/input.txt"; 15 let input = "resources/input.txt";
@@ -8,14 +18,3 @@ fn main() {
8 ex1(&sweep); 18 ex1(&sweep);
9 ex2(&sweep); 19 ex2(&sweep);
10} 20}
11
12fn ex1(sweep: &[u32]) {
13 let incs = sweep.windows(2).fold(0, |a, w| if w[0] < w[1] { a+1 } else { a });
14 println!("Ex1: depth increases {} times.", incs);
15}
16
17fn ex2(sweep: &[u32]) {
18 let avg3: Vec<u32> = sweep.windows(3).map(|w| w[0] + w[1] + w[2]).collect();
19 let incs = avg3.windows(2).fold(0, |a, w| if w[0] < w[1] { a+1 } else { a });
20 println!("Ex2: depth increases {} times.", incs);
21}