https://github.com/engossoftware/palindronum
Number palindromes
https://github.com/engossoftware/palindronum
Last synced: 11 days ago
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Number palindromes
- Host: GitHub
- URL: https://github.com/engossoftware/palindronum
- Owner: EngosSoftware
- License: apache-2.0
- Created: 2023-07-12T17:27:37.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-07-12T17:31:54.000Z (almost 2 years ago)
- Last Synced: 2023-10-15T13:43:22.326Z (over 1 year ago)
- Language: Rust
- Size: 8.79 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
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# Number palindromes
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.
To check if a number is a palindrome, use **is_palindrome** function, e.g.:
```rust
let x = 123; // no, this is not a palindrome
let is_palindrome = palindronum::is_palindrome(x);
println!("{x} is a palindrome: {is_palindrome}");
```
output:
```text
123 is a palindrome: false
```
```rust
let x = 121; // yes, this is a palindrome
let is_palindrome = palindronum::is_palindrome(x);
println!("{x} is a palindrome: {is_palindrome}");
```
output:
```text
121 is a palindrome: true
```
To generate first _n_ palindromes, use **first_n_palindromes** function, e.g.:
```rust
let first_10_palindromes = palindronum::first_n_palindromes(10);
for x in first_10_palindromes {
println!("{x:2} is a palindrome");
}
```
output:
```text
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
```
## License
Licensed under either of
- [MIT license][mit-url] (see [LICENSE-MIT][mit-license-url]) or
- [Apache License, Version 2.0][apache-url] (see [LICENSE][apache-license-url] and [NOTICE][apache-notice-url])
at your option.
## Contribution
Any contributions to [palindronum](https://github.com/EngosSoftware/palindronum) are greatly appreciated.
All contributions intentionally submitted for inclusion in the work by you,
shall be dual licensed as above, without any additional terms or conditions.