feat: add typescript solution to lc problem: No.1662.Check If Two String Arrays are Equivalent

Author: zhaocchen

solution/1600-1699/1662.Check If Two String Arrays are Equivalent/README.md

@@ -87,6 +87,15 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function arrayStringsAreEqual(word1: string[], word2: string[]): boolean {
+    let s1 = word1.join(''), s2 = word2.join('');
+    return s1 == s2;
+};
+```
+
 ### **...**
 
 ```

solution/1600-1699/1662.Check If Two String Arrays are Equivalent/README_EN.md

@@ -75,6 +75,15 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function arrayStringsAreEqual(word1: string[], word2: string[]): boolean {
+    let s1 = word1.join(''), s2 = word2.join('');
+    return s1 == s2;
+};
+```
+
 ### **...**
 
 ```

solution/1600-1699/1662.Check If Two String Arrays are Equivalent/Solution.ts

@@ -0,0 +1,4 @@
+function arrayStringsAreEqual(word1: string[], word2: string[]): boolean {
+    let s1 = word1.join(''), s2 = word2.join('');
+    return s1 == s2;
+};