edenthecat · December 9, 2015 19:39 · Dec 9, 2015
diff --git a/getMaxProfit.rb b/getMaxProfit.rb
@@ -0,0 +1,22 @@
+def getMaxProfit(stock_prices_yesterday)
+  if stock_prices_yesterday.index(stock_prices_yesterday.min) < stock_prices_yesterday.index(stock_prices_yesterday.max)
+    max_profit = (stock_prices_yesterday.max - stock_prices_yesterday.min)
+  else
+    possible_profits = []
+
+    minIndex = 0
+    maxIndex = stock_prices_yesterday.length
+
+    stock_prices_yesterday[0...(maxIndex-1)].each do |i|
+      stock_prices_yesterday[minIndex...maxIndex].each do |j|
+          possible_profits.push(j - i)
+      end
+      minIndex += 1
+    end
+    max_profit = possible_profits.max
+  end
+
+  puts "max profit: " + max_profit.to_s
+end
+
+getMaxProfit([11, 10, 9, 8, 7])