[Leetcode - Easy] Valid Palindrome (#16)

CorTorE · Dec 21, 2024 · f0bb8cc · f0bb8cc
1 parent 0a2e50f
commit f0bb8cc
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/bangdori/Valid Palindrome.js b/bangdori/Valid Palindrome.js
@@ -0,0 +1,22 @@
+/**
+ * @param {string} s
+ * @return {boolean}
+ */
+var isPalindrome = function (s) {
+  const removedNonAlphanemuricString = [...s.toLowerCase()].filter(
+    (alpha) => isLowerAlphabet(alpha) || isNumeric(alpha)
+  );
+
+  return (
+    removedNonAlphanemuricString.join("") ===
+    removedNonAlphanemuricString.reverse().join("")
+  );
+};
+
+function isLowerAlphabet(character) {
+  return character >= "a" && character <= "z";
+}
+
+function isNumeric(character) {
+  return character >= "0" && character <= "9";
+}