From: Greg Burri <greg.burri@gmail.com>
Date: Mon, 12 Dec 2022 10:04:45 +0000 (+0100)
Subject: little simplification
X-Git-Url: http://git.euphorik.ch/index.cgi?a=commitdiff_plain;h=afba0665db5dda81b79706ae369cb42f785f8c23;p=advent_of_code_2022.git

little simplification
---

diff --git a/src/day12.rs b/src/day12.rs
index ee08a24..fe30f0f 100644
--- a/src/day12.rs
+++ b/src/day12.rs
@@ -37,8 +37,7 @@ pub enum Path {
 
 pub fn nb_steps(hm: &Heightmap, path: Path) -> i32 {
     let (n, m) = (hm.elevations.len(), hm.elevations[0].len());
-    let mut visited: Vec<Vec<i32>> = Vec::new();
-    for _ in 0..n { visited.push(vec![-1; m]); }
+    let mut visited: Vec<Vec<i32>> = vec![vec![-1; m]; n];
     let mut positions = vec![hm.end];
     let mut next_positions = Vec::new();
     let mut step = -1;