James Pan

原题网址：https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/ Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the m

原题网址：https://leetcode.com/problems/wiggle-subsequence/ A sequence of numbers is called a wiggle sequence if the differences between successive numbers strictly alternate between positive and nega