ruby solution best time buy and sell stock

Author: ysonggit

best_time_to_buy_sell_stock.rb

@@ -0,0 +1,12 @@
+def max_profit(prices)
+  max_pro = 0
+  min_price = prices.first
+  prices.each do |cur_price|
+    max_pro = [max_pro,  cur_price-min_price].max
+    min_price = [min_price, cur_price].min
+  end
+  return max_pro
+end
+
+prices = [2,1,3,5,2,8,0,1,7,2]
+puts max_profit(prices)