Merge pull request #1257 from xiaofei-2020/greed23

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

problems/0714.买卖股票的最佳时机含手续费.md

@@ -293,6 +293,50 @@ var maxProfit = function(prices, fee) {
 };
 ```
 
+TypeScript：
+
+> 贪心
+
+```typescript
+function maxProfit(prices: number[], fee: number): number {
+    if (prices.length === 0) return 0;
+    let minPrice: number = prices[0];
+    let profit: number = 0;
+    for (let i = 1, length = prices.length; i < length; i++) {
+        if (minPrice > prices[i]) {
+            minPrice = prices[i];
+        }
+        if (minPrice + fee < prices[i]) {
+            profit += prices[i] - minPrice - fee;
+            minPrice = prices[i] - fee;
+        }
+    }
+    return profit;
+};
+```
+
+> 动态规划
+
+```typescript
+function maxProfit(prices: number[], fee: number): number {
+    /**
+        dp[i][1]: 第i天不持有股票的最大所剩现金
+        dp[i][0]: 第i天持有股票的最大所剩现金
+     */
+    const length: number = prices.length;
+    const dp: number[][] = new Array(length).fill(0).map(_ => []);
+    dp[0][1] = 0;
+    dp[0][0] = -prices[0];
+    for (let i = 1, length = prices.length; i < length; i++) {
+        dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][0] + prices[i] - fee);
+        dp[i][0] = Math.max(dp[i - 1][0], dp[i - 1][1] - prices[i]);
+    }
+    return Math.max(dp[length - 1][0], dp[length - 1][1]);
+};
+```
+
+
+
 
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