problem188

< Previous 　　　　　　　　　　　　　　　　 Next >

188. Best Time to Buy and Sell Stock IV (Hard)

Say you have an array for which the i-th element is the price of a given stock on day i.

Design an algorithm to find the maximum profit. You may complete at most k transactions.

Note:
You may not engage in multiple transactions at the same time (ie, you must sell the stock before you buy again).

Example 1:

Input: [2,4,1], k = 2
Output: 2
Explanation: Buy on day 1 (price = 2) and sell on day 2 (price = 4), profit = 4-2 = 2.

Example 2:

Input: [3,2,6,5,0,3], k = 2
Output: 7
Explanation: Buy on day 2 (price = 2) and sell on day 3 (price = 6), profit = 6-2 = 4.
             Then buy on day 5 (price = 0) and sell on day 6 (price = 3), profit = 3-0 = 3.

Related Topics

[Dynamic Programming]

Similar Questions

1. Best Time to Buy and Sell Stock (Easy)
2. Best Time to Buy and Sell Stock II (Easy)
3. Best Time to Buy and Sell Stock III (Hard)