From 5607dba5f749314dc387eae9fe992b9935fff3b1 Mon Sep 17 00:00:00 2001
From: Greg Burri <greg.burri@gmail.com>
Date: Mon, 12 Dec 2022 11:04:45 +0100
Subject: [PATCH] little simplification

---
 src/day12.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

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;
-- 
2.45.2