188.买卖股票的最佳时机IV

---

309.最佳买卖股票时机含冷冻期


参考

class Solution {
public:int maxProfit(vector<int>& prices) {vector<vector<int>> dp(prices.size(), vector<int>(4, 0));dp[0][0] = -prices[0];dp[0][1] = 0;dp[0][2] = 0;dp[0][3] = 0;for (int i = 1; i < prices.size(); i++) {dp[i][0] = max(dp[i - 1][0],max(dp[i - 1][1] - prices[i], dp[i - 1][3] - prices[i]));dp[i][1] = max(dp[i - 1][1], dp[i - 1][3]); // 保持卖出dp[i][2] = dp[i - 1][0] + prices[i];        // 卖出dp[i][3] = dp[i - 1][2];                    // 冻结}return max(dp[prices.size() - 1][1],max(dp[prices.size() - 1][2], dp[prices.size() - 1][3]));}
};

---

714.买卖股票的最佳时机含手续费


dp[i][0] : 持有股票的状态 dp[i][0] : 不持有股票的状态

class Solution {
public:int maxProfit(vector<int>& prices, int fee) {vector<vector<int>> dp(prices.size(), vector<int>(2, 0));dp[0][0] = -prices[0];//持有dp[0][1] = 0;   //不持有for (int i = 1; i < prices.size(); i++) {dp[i][0] = max(dp[i - 1][0], dp[i - 1][1] - prices[i]);dp[i][1] = max(dp[i - 1][1], dp[i - 1][0] + prices[i] - fee);}return dp[prices.size() - 1][1];}
};

---