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