Merge pull request #980 from xiaofei-2020/feat/ts

添加（0027.移除元素.md）：增加 typescript 版本

problems/0027.移除元素.md

@@ -197,7 +197,23 @@ var removeElement = (nums, val) => {
 };
 ```
 
+TypeScript：
+
+```typescript
+function removeElement(nums: number[], val: number): number {
+    let slowIndex: number = 0, fastIndex: number = 0;
+    while (fastIndex < nums.length) {
+        if (nums[fastIndex] !== val) {
+            nums[slowIndex++] = nums[fastIndex];
+        }
+        fastIndex++;
+    }
+    return slowIndex;
+};
+```
+
 Ruby:
+
 ```ruby
 def remove_element(nums, val)
     i = 0

problems/0977.有序数组的平方.md

@@ -221,6 +221,35 @@ var sortedSquares = function(nums) {
 };
 ```
 
+Typescript：
+
+双指针法：
+
+```typescript
+function sortedSquares(nums: number[]): number[] {
+    let left: number = 0, right: number = nums.length - 1;
+    let resArr: number[] = new Array(nums.length);
+    let resArrIndex: number = resArr.length - 1;
+    while (left <= right) {
+        if (Math.abs(nums[left]) < Math.abs(nums[right])) {
+            resArr[resArrIndex] = nums[right--] ** 2;
+        } else {
+            resArr[resArrIndex] = nums[left++] ** 2;
+        }
+        resArrIndex--;
+    }
+    return resArr;
+};
+```
+
+骚操作法（暴力思路）：
+
+```typescript
+function sortedSquares(nums: number[]): number[] {
+    return nums.map(i => i * i).sort((a, b) => a - b);
+};
+```
+
 Swift:
 
 ```swift