Palindromic Number in Rust

Published on 09 April 2023 (Updated: 08 May 2023)

Welcome to the Palindromic Number in Rust page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

use std::env::args;
use std::process::exit;
use std::str::FromStr;
use std::fmt::Display;

fn usage() -> ! {
    println!("Usage: please input a non-negative integer");

fn parse_int<T: FromStr>(s: &str) -> Result<T, <T as FromStr>::Err> {

fn is_palindromic_number<T: Display>(n: T) -> bool {
    // Source:

    // Convert number to string
    let s: String = n.to_string();

    // Check if palindrome by comparing left half of string with reversed right half of string
    let half_s_len: usize = s.len() / 2;

fn main() {
    let mut args = args().skip(1);

    // Convert 1st command-line argument to integer
    let n: u32 = args
        .and_then(|s| parse_int(&s).ok())
        .unwrap_or_else(|| usage());

    // Determine if palindromic number and display result
    println!("{}", is_palindromic_number::<u32>(n));

Palindromic Number in Rust was written by:

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

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How to Run the Solution

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