valid palindrome 풀이

Author: grapefruit13

valid-palindrome/grapefruit13.ts

@@ -0,0 +1,13 @@
+function isPalindrome(s: string): boolean {
+    const cleaned = s.toLowerCase().replace(/[^a-z0-9]/g, '');
+
+    let left = 0;
+    let right = cleaned.length - 1;
+
+    while (left < right) {
+        if (cleaned[left] !== cleaned[right]) return false;
+        left++;
+        right--;
+    }
+    return true;
+}