From 138c40efc41679ca069a3931a832410cf5d2ebdb Mon Sep 17 00:00:00 2001 From: Chris Rericha Date: Thu, 30 Jan 2025 00:10:10 -0500 Subject: [PATCH] [Core] Prevent negative coordinates from inadvertantly indexing from the end of the array --- lib/engine/stock_movement.rb | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/engine/stock_movement.rb b/lib/engine/stock_movement.rb index f7ddfb8563..9879ee9e97 100644 --- a/lib/engine/stock_movement.rb +++ b/lib/engine/stock_movement.rb @@ -8,6 +8,8 @@ def initialize(market) def share_price(coordinates) row, column = coordinates + return if row.negative? || column.negative? + @market.market[row]&.[](column) end