feat: add TS solution to lc problem No.290

Author: rain84

solution/0200-0299/0290.Word Pattern/README_EN.md

@@ -262,4 +262,33 @@ public class Solution {
 
 <!-- solution:end -->
 
+<!-- solution:start -->
+
+### Solution 2
+
+<!-- tabs:start -->
+
+#### TypeScript
+
+```ts
+function wordPattern(pattern: string, s: string): boolean {
+    const hash: Record<string, string> = Object.create(null);
+    const arr = s.split(/\s+/);
+
+    if (pattern.length !== arr.length || new Set(pattern).size !== new Set(arr).size) return false;
+
+    for (let i = 0; i < pattern.length; i++) {
+        hash[pattern[i]] ??= arr[i];
+
+        if (hash[pattern[i]] !== arr[i]) return false;
+    }
+
+    return true;
+}
+```
+
+<!-- tabs:end -->
+
+<!-- solution:end -->
+
 <!-- problem:end -->

solution/0200-0299/0290.Word Pattern/Solution2.ts

@@ -0,0 +1,14 @@
+function wordPattern(pattern: string, s: string): boolean {
+    const hash: Record<string, string> = Object.create(null);
+    const arr = s.split(/\s+/);
+
+    if (pattern.length !== arr.length || new Set(pattern).size !== new Set(arr).size) return false;
+
+    for (let i = 0; i < pattern.length; i++) {
+        hash[pattern[i]] ??= arr[i];
+
+        if (hash[pattern[i]] !== arr[i]) return false;
+    }
+
+    return true;
+}