From e8b4f8d408309ef86382caf65ee64b3f8c29988d Mon Sep 17 00:00:00 2001
From: ediazmen <alcmaeon@hotmail.com>
Date: Thu, 7 Apr 2022 15:11:13 -0700
Subject: [PATCH 1/2] Exercise-125

---
 javascript/125-ValidPalindrome.js | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 javascript/125-ValidPalindrome.js

diff --git a/javascript/125-ValidPalindrome.js b/javascript/125-ValidPalindrome.js
new file mode 100644
index 000000000..8067737e4
--- /dev/null
+++ b/javascript/125-ValidPalindrome.js
@@ -0,0 +1,30 @@
+class isValidPalindrome {
+    constructor(string){
+        this.string=string;
+    }
+    isPalindrome(string){
+        let left =0;
+        let right=string.length-1;
+        while(left<right){
+            while(left<right && this.isAlphaNumeric(string[left])){
+                left++
+            }
+            while(right>left && this.isAlphaNumeric(string[right])){
+                right--
+            }
+            if(string[left].toLowerCase()!=string[right].toLowerCase()) {
+                return false;
+            }
+            left++
+            right--  
+        }
+        return true
+    }
+
+    isAlphaNumeric(c){
+        return ('A'.charCodeAt(0) <= c.charCodeAt(0) <='Z'.charCodeAt(0) || 
+                'a'.charCodeAt(0) <= c.charCodeAt(0) <='z'.charCodeAt(0) ||
+                '0'.charCodeAt(0) <= c.charCodeAt(0) <='9'.charCodeAt(0))
+    }
+    
+}
\ No newline at end of file

From 644487b591c4ab657469c601212e5ee37ea0fa11 Mon Sep 17 00:00:00 2001
From: ediazmen <alcmaeon@hotmail.com>
Date: Thu, 7 Apr 2022 15:14:20 -0700
Subject: [PATCH 2/2] Exercise-125

---
 javascript/125-Valid-Palindrome.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/javascript/125-Valid-Palindrome.js b/javascript/125-Valid-Palindrome.js
index d953b3802..820e22a9c 100644
--- a/javascript/125-Valid-Palindrome.js
+++ b/javascript/125-Valid-Palindrome.js
@@ -16,4 +16,4 @@ var isPalindrome = function(s) {
         j--
     }
     return true;
-};
+};