12 new API endpoints

src/routes/api/string/isPalindrome.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const router = express.Router();
+
+function checkPalindrome(str) {
+    const clean = String(str).toLowerCase().replace(/[^a-z0-9]/g, '');
+    return clean === clean.split('').reverse().join('');
+}
+
+router.post('/', (req, res) => {
+    const { input } = req.body;
+    res.json({ ret: checkPalindrome(input) });
+});
+
+router.get('/:string', (req, res) => {
+    res.json({ ret: checkPalindrome(req.params.string) });
+});
+
+module.exports = router;