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KaarthiikM · web-flow · commit ca479385ab32 · 2023-08-17T20:02:57.000+05:30
diff --git a/JSprogram/Day4/Palindrome.js b/JSprogram/Day4/Palindrome.js
@@ -0,0 +1,31 @@
+//Palindrome or not
+let word=prompt("Enter word to check palindrome:").toLowerCase();
+let rev=""
+for(let i=word.length-1;i>=0;i--){
+    rev+=word[i]
+}
+
+rev===word ? console.log("its a palindrome"):console.log("its not a palindrome")
+
+// Easiest version
+let isPalindrome = gon === gon.split("").reverse().join("");
+console.log(isPalindrome ? `${gon} is a palindrome`:`${gon} is not a palindrome`)
+
+function longestPalindrome(s) {
+    let longest = '';
+    
+    for (let i = 0; i < s.length; i++) {
+        for (let j = i; j < s.length; j++) {
+            let substring = s.substring(i, j + 1);
+            if (substring === substring.split('').reverse().join('') && substring.length > longest.length) {
+                longest = substring;
+            }
+        }
+    }
+    
+    return longest;
+}
+console.log(longestPalindrome("babad"));  // Output: "bab" or "aba" (both are valid)
+console.log(longestPalindrome("cbbcabc"));   // Output: "cbbc"
+console.log(longestPalindrome("a"));      // Output: "a"
+console.log(longestPalindrome("ac"));     // Output: "a"
