diff --git a/problems/0123.买卖股票的最佳时机III.md b/problems/0123.买卖股票的最佳时机III.md index 7ff1bfe2..c7193bbc 100644 --- a/problems/0123.买卖股票的最佳时机III.md +++ b/problems/0123.买卖股票的最佳时机III.md @@ -278,7 +278,44 @@ class Solution: return dp[4] ``` -Go: +JavaScript: + +> 版本一: + +```javascript +const maxProfit = prices => { + const len = prices.length; + const dp = new Array(len).fill(0).map(x => new Array(5).fill(0)); + dp[0][1] = -prices[0]; + dp[0][3] = -prices[0]; + for (let i = 1; i < len; i++) { + dp[i][0] = dp[i - 1][0]; + dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][0] - prices[i]); + dp[i][2] = Math.max(dp[i - 1][2], dp[i - 1][1] + prices[i]); + dp[i][3] = Math.max(dp[i - 1][3], dp[i - 1][2] - prices[i]); + dp[i][4] = Math.max(dp[i - 1][4], dp[i - 1][3] + prices[i]); + } + return dp[len - 1][4]; +}; +``` + +> 版本二: + +```javascript +const maxProfit = prices => { + const len = prices.length; + const dp = new Array(5).fill(0); + dp[1] = -prices[0]; + dp[3] = -prices[0]; + for (let i = 1; i < len; i++) { + dp[1] = Math.max(dp[1], dp[0] - prices[i]); + dp[2] = Math.max(dp[2], dp[1] + prices[i]); + dp[3] = Math.max(dp[3], dp[2] - prices[i]); + dp[4] = Math.max(dp[4], dp[3] + prices[i]); + } + return dp[4]; +}; +```