Update 0009-palindrome-number.rs

[krishna-santosh]

• File(s) Modified: rust/0009-palindrome-number.rs
• Language(s) Used: rust
• Submission URL: https://leetcode.com/problems/palindrome-number/submissions/911210431

---

Follow up: Could you solve it without converting the integer to a string?

• This solution works without converting the given integer to a string.
• Follows the same algorithm shown on the channel