Revise comment to No_121

brianchiang-tw · brianchiang-tw · commit c3088276a3b5 · 2020-01-02T21:13:21.000+08:00
diff --git a/No_121_Best Time to Buy and Sell Stock/best_time_to_buy_and_sell_stock_by_valley_and_peak.py b/No_121_Best Time to Buy and Sell Stock/best_time_to_buy_and_sell_stock_by_valley_and_peak.py
@@ -24,6 +24,9 @@
 
 
 from typing import List
+
+# Only long position (buy-and-sell) is allowed, required by problem description.
+
 class Solution:
     def maxProfit(self, prices: List[int]) -> int:
         
