Merge pull request #1209 from xiaofei-2020/greed06

添加（0122.买卖股票的最佳时机II.md）：增加typescript版本

problems/0122.买卖股票的最佳时机II.md

@@ -268,6 +268,18 @@ const maxProfit = (prices) => {
 };
 ```
 
+TypeScript：
+
+```typescript
+function maxProfit(prices: number[]): number {
+    let resProfit: number = 0;
+    for (let i = 1, length = prices.length; i < length; i++) {
+        resProfit += Math.max(prices[i] - prices[i - 1], 0);
+    }
+    return resProfit;
+};
+```
+
 C:
 
 ```c