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Fix 2020 Day 3

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Fixed a bug in the CoordByteMap during 2021 day 9
This commit is contained in:
Brian Buller
2021-12-09 08:06:18 -06:00
parent 37fce967da
commit 80c89aee26
1 changed files with 2 additions and 2 deletions
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4
2020/day03/main.go
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@@ -28,8 +28,8 @@ func countTrees(field h.CoordByteMap, x, y int) int {
trees := 0 trees := 0
pos := h.Coordinate{X: x, Y: y} pos := h.Coordinate{X: x, Y: y}
for pos.Y < field.Height { for pos.Y < field.Height {
if pos.X > field.Width { if pos.X >= field.Width {
pos.X = pos.X - field.Width - 1 pos.X = pos.X - field.Width
} }
if field.Get(pos) == '#' { if field.Get(pos) == '#' {
trees++ trees++