添加（0131.分割回文串.md）：增加typescript版本

problems/0131.分割回文串.md

@@ -450,6 +450,38 @@ var partition = function(s) {
 };
 ```
 
+## TypeScript
+
+```typescript
+function partition(s: string): string[][] {
+    function isPalindromeStr(s: string, left: number, right: number): boolean {
+        while (left < right) {
+            if (s[left++] !== s[right--]) {
+                return false;
+            }
+        }
+        return true;
+    }
+    function backTracking(s: string, startIndex: number, route: string[]): void {
+        let length: number = s.length;
+        if (length === startIndex) {
+            resArr.push(route.slice());
+            return;
+        }
+        for (let i = startIndex; i < length; i++) {
+            if (isPalindromeStr(s, startIndex, i)) {
+                route.push(s.slice(startIndex, i + 1));
+                backTracking(s, i + 1, route);
+                route.pop();
+            }
+        }
+    }
+    const resArr: string[][] = [];
+    backTracking(s, 0, []);
+    return resArr;
+};
+```
+
 ## C
 
 ```c