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Solve palindrome-number.

This commit is contained in:
Bauke 2022-04-06 14:31:30 +02:00
parent df1fa87bb3
commit c8390c584f
Signed by: Bauke
GPG Key ID: C1C0F29952BCF558
2 changed files with 24 additions and 0 deletions

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@ -1,2 +1,3 @@
pub mod palindrome_number;
pub mod reverse_integer;
pub mod two_sum;

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@ -0,0 +1,23 @@
pub fn is_palindrome(number: i32) -> bool {
// Negative numbers can never be a palindrome because of the minus sign.
if number < 0 {
return false;
}
let number_string = number.to_string();
number_string == number_string.chars().rev().collect::<String>()
}
#[test]
fn test_palindrome_number() {
assert!(is_palindrome(0));
assert!(is_palindrome(-0));
assert!(is_palindrome(1));
assert!(is_palindrome(121));
assert!(is_palindrome(12321));
assert!(!is_palindrome(123));
assert!(!is_palindrome(321));
assert!(!is_palindrome(10));
assert!(!is_palindrome(-121));
}