reorganize dir

Signed-off-by: Mia Steinkirch <mia.steinkirch@gmail.com>

other_resources/interview_cake/math/apple_stocks.py

@@ -0,0 +1,27 @@
+#!/bin/python
+
+"""
+Grab Apple's stock prices and put them in a list called stock_prices, where:
+
+The indices are the time (in minutes) past trade opening time, which was 9:30am local time.
+The values are the price (in US dollars) of one share of Apple stock at that time.
+So if the stock cost $500 at 10:30am, that means stock_prices[60] = 500.
+
+Write an efficient function that takes stock_prices and returns the best profit I could have made from one purchase and one sale of one share.
+"""
+
+def apple_stock_profit(stock_prices):
+
+    min_s, max_s = max(stock_prices), 0
+
+    while stock_prices:
+        stock = stock_prices.pop()
+        min_s = min(min_s, stock)
+        max_s = max(max_s, stock)
+
+    return max_s - min_s
+
+
+stock_prices = [10, 7, 5, 8, 11, 9]
+print apple_stock_profit(stock_prices)
+print("Should return 6 (buying for $5 and selling for $11)")