Merge pull request #1215 from xiaofei-2020/greed09

添加（1005.K次取反后最大化的数组和.md）：增加typescript版本

problems/1005.K次取反后最大化的数组和.md

@@ -211,5 +211,29 @@ var largestSumAfterKNegations = function(nums, k) {
 };
 ```
 
+### TypeScript
+
+```typescript
+function largestSumAfterKNegations(nums: number[], k: number): number {
+    nums.sort((a, b) => Math.abs(b) - Math.abs(a));
+    let curIndex: number = 0;
+    const length = nums.length;
+    while (curIndex < length && k > 0) {
+        if (nums[curIndex] < 0) {
+            nums[curIndex] *= -1;
+            k--;
+        }
+        curIndex++;
+    }
+    while (k > 0) {
+        nums[length - 1] *= -1;
+        k--;
+    }
+    return nums.reduce((pre, cur) => pre + cur, 0);
+};
+```
+
+
+
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 <div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>