Question

How to convert string to hex in Rust

Answer 1

fn main() {
    let str = "Rust programming";

    let mut hex_string = String::new();
    
    for ch in str.chars() {
        hex_string.push_str(&format!("{:02X} ", ch as u32));
    }

    println!("{}", hex_string);
}


 
 
/*
run:
 
52 75 73 74 20 70 72 6F 67 72 61 6D 6D 69 6E 67 

*/

 

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Answer 2

use std::fmt::Write;
 
fn string_to_hex(input: &str) -> String {
    let mut hex_result = String::new();
     
    for byte in input.as_bytes() {
        write!(&mut hex_result, "{:02x}", byte).unwrap();
    }
     
    hex_result
}
 
fn main() {
    let example_str = "Rust Z";
     
    let hex_result = string_to_hex(example_str);
     
    println!("Hex value: {}", hex_result);
}
 
 
    
/*
run:
   
52757374205a
   
*/

 

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