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11Day-Palindrome.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.5.0 <0.9.0;
+//A palindrome number is a number that is same after reverse.For example 545, 151, 34543 etc.
+contract Day5 {
+//Create a function palindrome(uint n) . Thispalindrome() will check whether n is a palindrome or not.
+    function palindrome(uint256 n) public pure returns (uint256) {
+        uint256 reversed = 0;
+        uint256 remainder;
+        uint256 original;
+
+        original = n;
+        while (n != 0) {
+            remainder = n % 10;
+            reversed = reversed * 10 + remainder;
+            n /= 10;
+        }
+        //If n is a palindrome then palindrome() returns 1 and n is not palindrome then palindrome() must return 0.
+        if (original == reversed) {
+            return 1; //palindrome
+        } else {
+            return 0; //not palindrome
+        }
+    }
+}