Crate palindronum

Number palindromes checker and generator

A palindrome is a number that is the same when the digits are reversed. For example, 121, 2332, and 6 are all palindromes. But 10 is not a palindrome (since leading zeroes are not allowed). 0 is treated as a palindrome.

The maximum accepted number value is Palindrome::MAX.

To check if a number is a palindrome, use is_palindrome function, e.g:

 let x = 123; // no, this is not a palindrome
 let is_palindrome = palindronum::is_palindrome(x);
 println!("{x} is a palindrome: {is_palindrome}");

output:

 123 is a palindrome: false

 let x = 121; // yes, this is a palindrome
 let is_palindrome = palindronum::is_palindrome(x);
 println!("{x} is a palindrome: {is_palindrome}");

output:

 121 is a palindrome: true

To generate first n palindromes, use first_n_palindromes function, e.g.:

use palindronum::first_n_palindromes;

let first_10_palindromes = first_n_palindromes(10);
for x in first_10_palindromes {
  println!("{x:2} is a palindrome");
}

output:

  1 is a palindrome
  2 is a palindrome
  3 is a palindrome
  4 is a palindrome
  5 is a palindrome
  6 is a palindrome
  7 is a palindrome
  8 is a palindrome
  9 is a palindrome
 11 is a palindrome

Functions

first_n_palindromes

Returns an iterator over first n palindromes starting from 1.

is_palindrome

Returns true if the specified number is a palindrome.

Type Aliases

Palindrome

Type alias used as a base type for checked or generated palindromes.