Merge pull request #1327 from xiaofei-2020/dp39

添加（0714.买卖股票的最佳时机含手续费动态规划.md）：增加typescript版本

problems/0714.买卖股票的最佳时机含手续费（动态规划）.md

@@ -200,6 +200,29 @@ const maxProfit = (prices,fee) => {
 }
 ```
 
+TypeScript：
+
+```typescript
+function maxProfit(prices: number[], fee: number): number {
+    /**
+        dp[i][0]：持有股票
+        dp[i][1]: 不持有
+     */
+    const length: number = prices.length;
+    if (length === 0) return 0;
+    const dp: number[][] = new Array(length).fill(0).map(_ => []);
+    dp[0][0] = -prices[0];
+    dp[0][1] = 0;
+    for (let i = 1; i < length; i++) {
+        dp[i][0] = Math.max(dp[i - 1][0], dp[i - 1][1] - prices[i]);
+        dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][0] + prices[i] - fee);
+    }
+    return dp[length - 1][1];
+};
+```
+
+
+
 
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