From ec899d684b31e7fee9ba80836ec9683084d5dacb Mon Sep 17 00:00:00 2001 From: a12bb <2713204748@qq.com> Date: Tue, 12 Mar 2024 21:47:38 +0800 Subject: [PATCH] =?UTF-8?q?Update=200309.=E6=9C=80=E4=BD=B3=E4=B9=B0?= =?UTF-8?q?=E5=8D=96=E8=82=A1=E7=A5=A8=E6=97=B6=E6=9C=BA=E5=90=AB=E5=86=B7?= =?UTF-8?q?=E5=86=BB=E6=9C=9F.md?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 0309.最佳买卖股票时机含冷冻期新增C语言实现 --- ...09.最佳买卖股票时机含冷冻期.md | 35 ++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/problems/0309.最佳买卖股票时机含冷冻期.md b/problems/0309.最佳买卖股票时机含冷冻期.md index 0eb66fb5..9dc35bdf 100644 --- a/problems/0309.最佳买卖股票时机含冷冻期.md +++ b/problems/0309.最佳买卖股票时机含冷冻期.md @@ -457,6 +457,40 @@ function maxProfit(prices: number[]): number { }; ``` +### C: + +```c +#define max(a, b) ((a) > (b) ? (a) : (b)) + +/** + * 状态一:持有股票状态(今天买入股票, + * 或者是之前就买入了股票然后没有操作,一直持有) + * 不持有股票状态,这里就有两种卖出股票状态 + * 状态二:保持卖出股票的状态(两天前就卖出了股票,度过一天冷冻期。 + * 或者是前一天就是卖出股票状态,一直没操作) + * 状态三:今天卖出股票 + * 状态四:今天为冷冻期状态,但冷冻期状态不可持续,只有一天! + + */ +int maxProfit(int* prices, int pricesSize) { + if(pricesSize == 0){ + return 0; + } + int dp[pricesSize][4]; + memset(dp, 0, sizeof (int ) * pricesSize * 4); + dp[0][0] = -prices[0]; + for (int i = 1; i < pricesSize; ++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]); + dp[i][2] = dp[i - 1][0] + prices[i]; + dp[i][3] = dp[i - 1][2]; + } + return max(dp[pricesSize - 1][1], max(dp[pricesSize - 1][2], dp[pricesSize - 1][3])); +} +``` + + + ### Rust: ```rust @@ -486,4 +520,3 @@ impl Solution { -